Philodendron dressleri G.S.Bunting
  • Ann. Missouri Bot. Gard. 50: 24 (1964) 


Notes: Distribution: Mexico (Marias Is., Sinaloa, Nayarit)

General Description

Hemiepiphytic; stem scandent, 3--3.5 cm long, 4--4.6 cm diam., leaf scars conspicuous, 3--3.5 cm long, 4--4.6 cm wide; internodes short, stout, succulent, scurfy, 3--6.5 cm long, 4--7 cm diam., broader than long, pale olive-green to gray-green, becoming grayish white with age, epidermis peeling; roots few per node, brownish, smooth, long, to 7 mm diam.; cataphylls 16--22 cm long, sharply 2-ribbed, drying weakly 2-ribbed, densely short dark striate, sometimes deciduous in dry season; LEAVES: petioles 34.5--70 cm long, 1--1.8 cm diam., terete, somewhat spongy, surface dark green-striate, dark green ring around apex; blades ovate in outline, deeply incised-lobate, bipinnatifid, weakly bicolorous, matte to semiglossy, acute to weakly obtuse at apex (the acumen apiculate), cordate at base, 30--46.5 cm long, 27--40.5 cm wide (0.99--1.2 times longer than wide), (0.9--1.2 times longer than petiole), broadest near the middle; anterior lobe 20.5--30 cm long with up to 6 segments, 12--19 cm long and each 3--5-lobed; posterior lobes rounded in outline, turned up at angle to midrib with ca. 5 similarly lobed segments; sinus closed or nearly so; segments pinnatifid, 12.3--27 cm long, divided to within 2--15 cm from the midrib; the interlobal sinus divided 0.4--0.7 the length of the lobe; midrib flat, dark green striate, paler than surface above, round-raised, pale striate, paler than surface below; basal veins 4 per side, 3--4 coalesced 5--10 mm; posterior rib naked for 2.5 cm; primary lateral veins 5--6 per side, departing midrib at a 45--60E angle, more or less straight, eventually branching to the margins, flat to weakly raised above, round-raised and paler than surface below; reticulate veins visible, darker than surface below; minor veins arising from both the midrib and primary lateral veins; tertiary veins sunken and paler than surface above, raised and paler than surface below. INFLORESCENCES 1 per axil; peduncle 9--16 cm long, 7--9 mm diam. (dried), green; spathe 12--21 cm long (1.3 times longer than peduncle), weakly constricted above the middle, more or less obtuse at apex; spathe blade dark green outside, pinkish, with darker punctations inside; spathe tube green outside, to 4.5 cm long, purplish violet to wine-red or crimson inside; spadix 10--15 cm long; pistillate portion to 3.5 cm long, 2.2 cm diam.; staminate portion to 14 cm long; fertile staminate portion clavate, to 1.9 cm diam. at base, 2.4 cm diam. ca. 1 cm from apex; sterile staminate portion 2.4 cm diam.; pistils 3.7(7) mm long; ovary 4--5-locular, with axile placentation; ovule sac 2.5 mm long; ovules 3--4 per locule, 2-seriate, contained within translucent envelope, 0.4 mm long, longer than funicle; funicle 0.2--0.3 mm long, adnate to lower part of axillary wall, style similar to style type B; central style dome sometimes present; style apex flat; stigma subdiscoid to hemispheroid, 1.8 mm diam., 0.7 mm high, covering entire style apex; the androecium truncate, more or less prismatic, irregularly 5--6-sided, ca. 1.6 mm long; thecae more or less oblong, 0.4 mm wide, nearly contiguous, more or less parallel to one another. INFRUCTESCENCE with spathe 10-13 cm long, pistillate spadix 4--6.5 cm long, 3.5--4 cm diam.; seeds 3--4 per locule, 2 mm long, 0.8 mm diam.

Habitat

Selva Baja Caducifolia.

Distribution

Endemic to west central Mexico from coastal Nayarit including Tres Marías Islands, off the western coast of Mexico) to southern Sinaloa.

Distribution Map

 
  • Native distribution
Specimens
Found in
  • Northern America Mexico Mexico Northwest
  • Mexico Southwest

  Bibliography

  • 1 Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 2 Croat, T.Bernard A revision of Philodendron subgenus Philodendron (Araceae) for Mexico and Central America Ann. Missouri Bot. Gard. 84, (1997).

 Information From

CATE Araceae
http://araceae.e-monocot.org
Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 14 Dec 2011 . 17 Dec 2011.
  • A All Rights Reserved
Global Biodiversity Information Facility
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eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
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World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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