Your search for articles by authors with the surname Shaw has found 19 articles.

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Dorothy E. Shaw, A. Hiller, Katherine A. Hiller Alocasia macrorrhiza and birds in Australia (Buy)
 ABSTRACT: Reports are given of the eating of berries of Alocasia macrorrhiza by Lewin's Honeyeater and the Regent Bowerbird in the wild in Australia; it is not known, however, whether the seed is regurgitated or voided. Aspects of ornithochory are discussed in relation to the reports.
Dorothy E. Shaw The two botanical gardens in Brisbane (Buy)
 ABSTRACT: The history of the two botanic gardens (the first dating from 1828 and the second from 1976) in Brisbane is briefly given, together with a mention of the aroids under cultivation and on display.
Dorothy E. Shaw Germination of Typhonodorum lindleyanum at Brisbane (Buy)
 ABSTRACT: The giant Madagascar swamp aroid, Typhonodorum lindleyanum Schott, has been successfully grown in an artificial lake at the Mt. Coot-tha Botanic Gardens near Brisbane. Plants have flowered and produced fruit and new plants have been established from the germinated seedlings. As early literature may not be readily available to some readers, a brief account of germination is given below.
Dorothy E. Shaw The occurrence and frequency of stomata of leaves of Monstera deliciosa (Araceae) (Buy)
 ABSTRACT: As revealed by impressions on celloidin strips, stomata were present on all leaf parts of Monstera deliciosa sampled, but were more abundant on some parts than on others. On pinnatifid leaves, the calculated mean numbers of stomata per mm2 were: on the lower surface interveinal laminae: 49.9; upper midribs: 27.1; upper petioles: 3.3; lower petioles: 1.8; upper interveinal laminae: 0.8; and lower midribs: 0.6. On entire leaves the corresponding figures were: 32.1, 27.4, 2.5, 3.5, 2.6, and 0 calculated mean numbers of stomata per mm2, respectively.
Dorothy E. Shaw Aroid postage stamps of the world (Buy)
 ABSTRACT: Some countries have issued postal stamps featuring aroids, as described below. This information may also prove of interest as background material if members of the International Aroid Society, readers of Aroideana, or other aroid enthusiasts wish at some future time to recommend the issue of aroid stamps to their respective postal authorities.
Dorothy E. Shaw, L. H. Bird, L. I. Forsberg Gynmostachys anceps R. Br.: Australian range and habitat in southeastern Queensland (Buy)
 ABSTRACT: The range of G. anceps in Australia is depicted together with the results of two detailed surveys in southeastern Queensland and at other specific sites. Although occurring in a variety of situations, the plant was most prevalent in open (wet sclerophyll, Eucalyptus, hardwood) forest where flowering and fruiting were also more abundant than in closed (vineforests, rainforest) forest.
Dorothy E. Shaw Gynmostachys anceps R. Br.: Fruit (Buy)
 ABSTRACT: Fruit of G. anceps is described, including the presence of a cavity at the apex of the endosperm. Germination occurred without dormancy in 34-40 days, with seedlings producing cataphylls before the first foliar leaf. Roots of seedlings were plump, lacked root hairs, were sparsely branched, and had proximal transverse wrinkles indicative of contractile roots. Possible means of dispersal are discussed, but observations support the contention that the fruit is passively dispersed, i.e. after abscission it falls to the ground around the mother plant and germinates among or under leaf litter and other debris.
Dorothy E. Shaw Damage to plants and ingestion of fruit and seeds of Alocasia brisbanensis (F. M. Bailey) Domin (Araceae) by the bush-turkey (Alectura lathami (Buy)
 ABSTRACT: Damage to the leaves, petioles and peduncles of fruiting plants of Alocasia brisbanensis by the Brush-turkey (Alectura lathamt) occurred as a consequence of the birds trying to reach the fruit. Tests showed that the turkey will pick mature red fruit from spadices, and with some difficulty, green fruit (if the infructescences are within reach) and that it will eat detached ripe red fruit, red fruit pulp, seeds free from pulp, immature green fruit and less readily, unfertilized florets. It is not known whether the seed is regurgitated, crushed in the gizzard, digested in the gastro- intestinal tract, or voided, and if the last, whether it is still viable or not. Information on the ingestion of other aroid fruit by birds and animals is also listed.
Dorothy E. Shaw Fruit of Alocasia brisbanensis (F. M. Bailey) Domin ingested by the eastern water dragon (Physignathus lesueurii lesueurii) in Queensland
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 ABSTRACT: Some plants of the indigenous 'cunjevoi' [Alocasia brisbanensis (F.M. Bailey) Domin, formerly known in Australia as A. macrorrhiza, -rrhizos (L.) G. Do n] grow in a gully in a simulated rainforest at Indooroopilly near a bank of the Brisbane River and reach a height of about 8 feet (2.4 m) (Fig. 1). On 6 March 1998, during an inspection of the few remaining infructescences (fruiting heads) left on the plants after the current season, an Eastern Water Dragon (Physignathus lesueurii Gray lesueurit) was found eating the ripe, fleshy red berries still remaining on one of the fru iting heads.
Dorothy E. Shaw Aroid postage stamps of the world. Supplement 1 (Buy)
 ABSTRACT: Postage stamps featuring aroids, or involving aroid culture or use, omitted from a previous publication (Shaw, 1993) and those issued since, are listed with the countries of origin, the dates, the reasons for the stamp issue and with illustrations of some of the stamps.
Dorothy E. Shaw Fertile florets (Buy)
 ABSTRACT: The numbers of female florets on 12 inflorescences of Alocasia brisbanensis (F. M. Bailey) Domin ranged from 117 to 231 per inflorescence with a mean of 165.6. The numbers of stigmatic lobes on 1,987 pistils of these heads ranged from 1 to 5, with those with 2 (51.9%) and 3 (42.2%) lobes predominant. Stigmas with 1 lobe (1.8%) occurred in pistils designated 'tubular' with no ovules, and 'globose' with a mean number of 2 ovules. One 4- and all 5-lobed stigmas, called 'doubles' had joined adjacent ovary walls and stigmas. The numbers of ovules ranged from 0-10, and although these figures were variable, there was a general trend for the number of ovules per ovary to increase with the number of stigmatic lobes to 4 lobes, and then decrease. The ageing of the stigmas is described, and data on various inflorescence and infructescence characteristics from the literature are listed.
Dorothy E. Shaw The natural stimulation of some unfertilized female florets of Alocasia brisbanensis (Araceae)
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 ABSTRACT: The stimulation of certain unfertilized female florets (u.f.f.) of Alocasia brisbanensis is reported. The affected florets occur adjacent to or around berries (fertilized female florets). The stimulated florets are larger than the unfertilized florets (but smaller than the berries) and reddish orange in color rather than the smaller orange- colored normal u.f.f., although all u.f.f. later usually turn reddish. The stimulated florets are seedless. It is suggested that a growth substance of unknown composition causes the stimulation from the maturing berries.
Dorothy E. Shaw Variegation in Alocasia brisbanensis (F. M. Bailey) Domin (Araceae) (Buy)
 ABSTRACT: Plants of Alocasia brisbanensis at sites in the Brisbane River Valley were recorded as 0) variegated, including (0 plants with overall coloration (called 'haze') in the petiole and peduncle plus a pattern on the petiole and peduncle, and (ii) plants without haze but with the pattern, and (2) nonvariegated plants. Microscopically the haze was found to consist of vertical lines of pigmented parenchyma between the bundles of fibers at the periphery of the petiole and peduncle, and the pattern on the petiole as pigmented parenchyma clustered around some parts of the vertical and tangential vessels, and on the peduncle often between the vertical rows of fiber bundles. Very young seedlings also showed variegation on the cataphylls and first foliar leaf petioles. A range of variegation involving the intensity of both haze and pattern was found in the progeny of natural crosses. Plants with intense overall haze appeared smaller than the ones without this feature. The pigment is water-soluble.
Dorothy E. Shaw Aroid postage stamps of the world. Supplement 2. (Buy)
 ABSTRACT: Postage stamps featuring aroids, or involved with aroid culture or use, omitted from previous publications (Shaw, 1994, 1999), and those issued since, are listed with the country of origin, the dates, the reason for each stamp issue, and with illustrations of many of the stamps. Mistakes in aroid stamps are discussed, particularly two serious cases of mislabelling of scientific names. The total number of stamps for each genus in all three of the publications is also listed.
Dorothy E. Shaw Dimorphic pollen of Alocasia brisbanensis (Araceae) in Queensland (Buy)
 ABSTRACT: Pollen of Alocasia brisbanensis (F. M. Bailey) Domin at Indooroopilly near Brisbane, and at Tolga Scrub ca. 1,400 km NW of Brisbane, was dimorphic. At the time of pollen extrusion it consisted of (1) normal grains with a diameter range of 32.~9.9 J.Lm and a mean of 40.0 J.Lm, with stainable protoplasm, starch and ability to germinate; and (2) small, aborted grains with a diameter range of 19.0-34.2 fJ.m and a mean of 27.7 fJ.m, and without stainable protoplasm, no starch and inviable. At extrusion the amount of aborted grains ranged from 1.8-14.9% (that is, with high variability) with a mean of 6.5%. The amount of aborted grains in buds and during gaping of the spathe was also highly variable but with means of 7.0% and 5.8% respectively, with an average of 6.4% for the 21,201 total grains examined for all stages.
Dorothy E. Shaw The stigma and style of Alocasia brisbanensis (F.M. Bailey) Domin (Araceae) (Buy)
 ABSTRACT: The stigmatic surface of each lobe of Alocasia brisbanensis consisted of a head of closely packed vertical papillae 160-220(- 250) f.Lm long by (9.5-)11.4(-13.3) f.Lm wide, some tapering to 3.8-5.7 f.Lm wide towards the base, each unicellular with a rounded tip. Deterioration and disorganization of stigmas occurred with deliquescence after about Day 7 from unfurling. The styles were short (0.2-)0.3(-0.4) mm long, with scattered idioblasts and raphide bundles in an outer zone encircling an inner solid core with some vascular elements. Stigmas pressed gently onto clean, dry, glass slides left an imprint consisting of minute amorphous particles, and the stigmas are therefore tentatively classed as wet Group III. Sampling of attached and detached inflorescences via a trapdoor cut into the spathal chambers, as well as through the spathal gaps (using Quantofix (R) Peroxide 25 test sticks) indicated receptivity of the stigmas during the bud stage and gaping of the spathal limb, and even after closure of the gap.
Dorothy E. Shaw, L. H. Bird A note on the dimorphic pollen of variegated Alocasia brisbanensis (F.M. Bailey) Domin (Araceae)
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 ABSTRACT: Pollen from three variegated plants, two with overall purplish-brown coloration (haze) plus pattern from Ipswich, about 32 km in direct line west of Brisbane, and one with pattern only from Indooroopilly near Brisbane, was dimorphic. Pollen from two non-variegated plants from Indooroopilly was also dimorphic. The diameter range of normal grains with starch from the variegated and non-variegated plants was 32.3- 47.5 J.Lm with a mean of 40.5 J.Lm, whereas that of the aborted grains without starch was 19.0-36.1 J.Lm with a mean of 26.1 J.Lm. The amount of aborted grains, in a total of 2512 examined from the five specimens, was 5.1-9.8% with a mean of 7.1 %. After examination of the above results, it is suggested that the gene, or genes, for variegation is not genetically linked to the mechanism leading to abortion of some grains.
Inside back cover
Dorothy E. Shaw An amendment and an erratum
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Dorothy E. Shaw The Monstera rust fungusas a living probe for aroid DNA (Buy)
 ABSTRACT: It has been pointed out that fungi can act as aids to higher plant classification. The results of inoculation tests with the rust fungus Puccinia paullula f. sp. monsterae are examined in relation to the placement of the taxa in the classifications of the taxonomic and molecular botanists. Out of 72 plant taxa inoculated over a period of years, 64 were immune and eight showed various degrees of susceptibility. Of these eight, seven (Monstera deliciosa, M. standleyana 'Variegata', M. adansonii var. laniata, M. obliqua, M. subpinnata, Stenospermation sp. and Epipremnum pinnatum) are all in the tribe Monstereae of the subfamily Monsteroideae. The eighth, Typhonodorum lindleyanum, the giant swamp taro of Madagascar and East Africa, which is placed in the tribe Peltandreae of a different subfamily (Aroideae), was also found to be moderately susceptible. These eight taxa belong to four genera with present natural geographic distributions in Africa, America, Asia and Australia. Apart from the seeming anomaly of Typhonodorum which may be further evidence of ancient aroid germplasm distribution- the taxa with various degrees of susceptibility to the Monstera rust fungus do reflect affinities as given by the taxonomic and molecular botanists.