Silver leaf Philo (hastatum?) blooming - pics

From: "Eugene Hoh" hohe at symphony.net.au> on 2002.11.29 at 10:44:31(9665) Hello all, (& sorry to those not Philodendron-inclined, for turning this topic into a saga...) Thank you, Eduardo (& Tom) for the helpful info re. P. hastatum. I've now had a good look at the blooming Philo 'Silver Sword' and it is overall a close match to your description; I have some pics of it (address below). However, there seem to be a couple of differences in the flowering parts: 'Silver Sword' has 11-13 locules per ovary, rather than 5-6; and the biggest plants sometimes have 2 inflorescences per leaf/sympodium. Do you think the greater no. of locules falls within the variation you would expect for P. hastatum, or might that indicate that it's perhaps a different species? Here are few other characteristics of 'Silver Sword': * petioles of juvenile (pre-sympodial) plants are sheathed along their entire length; the wings of the sheath usually project several millimetres beyond the leaf base. * Adult foliage still quite silvery, though not as much as juveniles * Stamens cream coloured, in groups of 3 or (most often) 4. * Staminodial/staminate portion of spadix secretes drops of sticky reddish-caramel coloured fluid during shedding of pollen * Spathe is apple-green outside, and is paler in the 'blade' part, fading to greenish-cream toward the apex. Spathe inside is greenish-off-white; the tube has translucent vertical "veins" visible toward the base, and also short, light brown squiggly lines on the surface * The peduncle is usually slightly shorter than the spathe, and a bit flattened (cf. petioles) * I vaguely remember the fruits being beige or straw-coloured. If anyone's interested, some snapshots of this flowering Philo reside at: http://au.photos.yahoo.com/consternation3000 - click on 'vegetal' to open the album/ folder containing the pix. Anyway, for those still interested, over the next couple of weeks I'll post some more notes and snapshots of recently flowering Philos, including a couple of sp. related to 'Silver Sword' which have been successfully cross-pollinated with it and have yielded seedlings. Cheers, Eugene +More Eugene Hoh Sydney, Australia hohe@symphony.net.au Eduardo Goncalves wrote: > Dear Eugene, > > I have just checked in my plants to see if they are in flower, but they > are not yet. So here follows a few info on how to recognize it: > > Vegetatively: Stems grayish, more or less smooth, internodes usually 1.5-2 > cm thick in adult (flowering plants); petioles a little flattened > dorsiventrally; leaves sagittate-hastate (i.e., something between an > arrowhead and an inverted "T"; young leaves silvery, getting greener with > time. Fertile material: inflorescence usually solitary; spathe green > outside, usually pale green inside (as far as I remember); female flowers > with the stigma with a diameter smaller than the diameter of the ovaries; > ovaries with 5-6 locules and 2-4 per ovules per locule, attached nearby the > base of the ovule. I do not remember the color of the berries. > In the field the plant is a low climber, usually climbing up to the first > 1.5-2 m of the host tree. The same is true for cultivated plants. It rarely > climbs high in the host tree or totem. Well, I think it is enough to > recognize. Any specific question, feel free to ask. > > Very best wishes, > > Eduardo. > > Eduardo G. Goncalves > Laboratorio de Fitoquimica > Depto. de Botanica - IB > Universidade de Sao Paulo > Caixa Postal 11461 - CEP 05422-970 > Sao Paulo - SP - BRAZIL > e-mail: edggon@hotmail.com > edggon@ib.usp.br > Phone: 55 11 3091-7532 > FAX : 55 11 3091-7547 >

From: "Cassia M. Sakuragui" cmsakura at uem.br> on 2002.11.29 at 15:10:35(9666) Dear Eugene, Sorry I was out of the discussion about P. hastatum but as I have done some studies on this species I felt confortable to send a description from a paper on P. hastatum (nomenclature) by Simon Mayo and myself ( in print at the moment). By the way, I wouldn't say that P. hastatum could present the variation you mentioned. +More All the best, Cassia Sakuragui. Description based on examined material (herbaria): Hemiepiphyte. Stem: internodes 1.5-8 cm long. Leaf: prophyll 18-25.5 cm long, pale green, glossy; petiole 13.5-46 cm long; blade 20-45 x 7-15 cm, narrowly ovate to triangular ovate, chartaceous, dark green on the adaxial surface, pale green on the abaxial surface, semiglossy to glossy, rounded to subacute at apex, sagittate at base, anterior lobe 25.5-32 x 7-15 cm, posterior lobes 5-11 x 6-10 cm, sinus arcuate, basal veins 3 per side, with 1 free to the base, 2 coalesced for 6-8 mm; posterior rib naked for 3-4 cm; primary lateral veins 6-7 per side, minor veins inconspicuous. Inflorescence: one per axil, peduncle 5.5-4.5 cm long; spathe 8.5-12.5 cm long, ovate, white externally, greenish cream internally; spadix 7.5-12 cm long, staminate zone 3-6 cm long, cream, sterile zone 0.5-1 cm long, white, pistillate zone 3.5-4.5 cm long, greenish. Flower: stamen 1-1.2 x 0.8-1 mm; staminode 2-4 x 1-2 mm; gynoecium 1-1.5 x 0.8-1 mm, ovate, ovary 5-6 locular, 2-5 ovules per locule, placentation subbasal. Berry (young): 1.5-2.5 x 1-1.5 mm, pear shaped; seed 0.8-1 mm long, ellipsoid.

From: Tom Croat Thomas.Croat at mobot.org> on 2002.11.29 at 17:49:34(9668) Eugene: I was hoping that this might be a member of section Calostigma, putting it into the area of knowledge of Cassia Sakurgui, but with that many ovules per locule it has to be in section Philodendron. Still, I am copying Cassia in the event that she might have something to add to this. Tom +More -----Original Message----- Sent: Friday, November 29, 2002 10:45 AM To: aroid-l@lists.ncsu.edu Cc: yellow_peril_@hotmail.com Subject: [aroid-l] Silver leaf Philo (hastatum?) blooming - pics Hello all, (& sorry to those not Philodendron-inclined, for turning this topic into a saga...) Thank you, Eduardo (& Tom) for the helpful info re. P. hastatum. I've now had a good look at the blooming Philo 'Silver Sword' and it is overall a close match to your description; I have some pics of it (address below). However, there seem to be a couple of differences in the flowering parts: 'Silver Sword' has 11-13 locules per ovary, rather than 5-6; and the biggest plants sometimes have 2 inflorescences per leaf/sympodium. Do you think the greater no. of locules falls within the variation you would expect for P. hastatum, or might that indicate that it's perhaps a different species? Here are few other characteristics of 'Silver Sword': * petioles of juvenile (pre-sympodial) plants are sheathed along their entire length; the wings of the sheath usually project several millimetres beyond the leaf base. * Adult foliage still quite silvery, though not as much as juveniles * Stamens cream coloured, in groups of 3 or (most often) 4. * Staminodial/staminate portion of spadix secretes drops of sticky reddish-caramel coloured fluid during shedding of pollen * Spathe is apple-green outside, and is paler in the 'blade' part, fading to greenish-cream toward the apex. Spathe inside is greenish-off-white; the tube has translucent vertical "veins" visible toward the base, and also short, light brown squiggly lines on the surface * The peduncle is usually slightly shorter than the spathe, and a bit flattened (cf. petioles) * I vaguely remember the fruits being beige or straw-coloured. If anyone's interested, some snapshots of this flowering Philo reside at: http://au.photos.yahoo.com/consternation3000 - click on 'vegetal' to open the album/ folder containing the pix. Anyway, for those still interested, over the next couple of weeks I'll post some more notes and snapshots of recently flowering Philos, including a couple of sp. related to 'Silver Sword' which have been successfully cross-pollinated with it and have yielded seedlings. Cheers, Eugene Eugene Hoh Sydney, Australia hohe@symphony.net.au Eduardo Goncalves wrote: > Dear Eugene, > > I have just checked in my plants to see if they are in flower, but they > are not yet. So here follows a few info on how to recognize it: > > Vegetatively: Stems grayish, more or less smooth, internodes usually 1.5-2 > cm thick in adult (flowering plants); petioles a little flattened > dorsiventrally; leaves sagittate-hastate (i.e., something between an > arrowhead and an inverted "T"; young leaves silvery, getting greener with > time. Fertile material: inflorescence usually solitary; spathe green > outside, usually pale green inside (as far as I remember); female flowers > with the stigma with a diameter smaller than the diameter of the ovaries; > ovaries with 5-6 locules and 2-4 per ovules per locule, attached nearby the > base of the ovule. I do not remember the color of the berries. > In the field the plant is a low climber, usually climbing up to the first > 1.5-2 m of the host tree. The same is true for cultivated plants. It rarely > climbs high in the host tree or totem. Well, I think it is enough to > recognize. Any specific question, feel free to ask. > > Very best wishes, > > Eduardo. > > Eduardo G. Goncalves > Laboratorio de Fitoquimica > Depto. de Botanica - IB > Universidade de Sao Paulo > Caixa Postal 11461 - CEP 05422-970 > Sao Paulo - SP - BRAZIL > e-mail: edggon@hotmail.com > edggon@ib.usp.br > Phone: 55 11 3091-7532 > FAX : 55 11 3091-7547 >

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