Philodendron roseospathum Croat
  • Ann. Missouri Bot. Gard. 84: 511 (1997) 


Notes: Distribution: Panama to Colombia

General Description

Terrestrial or rarely hemiepiphytic; stem appressed-climbing, or creeping, leaf scars inconspicuous, obscured by cataphyll fibers; internodes short, semiglossy, 1--4 cm long, 1.5--2.7 cm diam., longer than broad, dark green to gray-green to reddish, obscured by cataphyll fibers; roots many, thin, wiry, descending, greenish brown; cataphylls 12--27 cm long, sharply 2-ribbed (unribbed to weakly to sharply 2-ribbed in Colombia), pale red to purple-violet, drying dark brown, sharply D-shaped, persisting semi-intact at upper nodes, as fibers below. LEAVES: Petioles 10--27 cm long, 3--6 mm diam., U-shaped, thicker than broad, firm, dark green to reddish, tinged purple, somewhat flattened to obtusely or narrowly sulcate adaxially; geniculum pale green to reddish violet, 1 cm long 1.5 cm diam.; blades elliptic to oblong-elliptic, sometimes oblanceolate, rarely elliptic, coriaceous to subcoriaceous, conspicuously bicolorous, sometimes acuminate at apex (the acumen inrolled, 1--3 mm long), acute to narrowly rounded, sometimes attenuate at base, (22)30--49 cm long, 9.5--21 cm wide (1.8--3.5(4.5) times longer than broad), (1.6--3.2 times longer than petiole), about twice as long as wide, upper surface dark green, matte to semiglossy, lower surface moderately paler, semiglossy to glossy; midrib narrowly sunken, paler than surface above, narrowly convex, thicker than broad, matte, paler than surface and sometimes reddish green below; basal veins lacking or sometimes 1-2 per side, free to base; primary lateral veins 8--14(16) per side, departing midrib at a 40--55E angle, sunken to narrowly sunken, concolorous to paler than surface above, convex and darker than surface below; interprimary veins few, sunken to narrowly sunken, concolorous to paler than surface above, raised and darker than surface below; minor veins few, moderately obscure above, darker than surface below, arising from midrib only, sometimes prominulous and weakly undulate on drying. INFLORESCENCES 1--2 per axil; peduncle 2.5--6 cm long, 2.5--5 mm diam., reddish, prominently green streaked; spathe 6.5--10 cm long (1.3--3.3(4.6) times longer than peduncle), red to maroon or violet-purple or sometimes green heavily tinged red, sometimes greenish white through; spathe blade frequently dark green (red in Colombia) outside, pale green to maroon inside; spathe tube short pale-lineate outside, 3--4 cm long, 2 cm diam., pale green to maroon inside; spadix more or less tapered, 6.8--8 cm long, broadest at the base; pistillate portion white to pale green, cylindrical, 2--3.7 mm long, 1--1.5 mm diam. at apex, 11--7.2 mm diam. at middle, 9--11(17) mm wide at base; staminate portion 3.9--4.9(6) cm long; fertile staminate portion cream, cylindrical to somewhat tapered, 10 mm diam. at base, 8 mm diam. at middle, 8 mm diam. ca. 1 cm from apex, broadest usually at base, narrower than the pistillate or sterile portion; sterile staminate portion as broad as the pistillate portion, 10 mm diam.; pistils 2.5 mm long, 1.6--1.9 mm diam., tinged reddish; ovary (4)5--7(8)-locular, 1.4 mm long, 1.6 mm diam., with axile placentation; locules 1.4 mm long, 0.5 mm diam.; ovules 14--18 per locule, contained within a gelatinous matrix, 2-seriate, 0.3--0.5 mm long, longer than funicle; funicle 0.2--0.4 mm long, adnate to lower part of partition, style 0.4--0.6 mm long, 1.6--1.8 mm diam., similar to style type B; style apex flat to weakly rounded; stigma usually subdiscoid, 1.1--1.3 mm diam., 0.2--0.5 mm high, covering entire style apex; the androecium truncate, prismatic, oblong, margins irregularly 4--6-sided, 0.7 mm long, 1.2--1.5 mm diam. at apex; thecae oblong to cylindrical, 0.5 mm wide, more or less parallel to one another and contiguous; sterile staminate flowers clavate, blunt, irregularly 4--6-sided, 2.3 mm long, 2 mm wide. INFRUCTESCENCE with pistillate spadix 4--4.5 cm long, 1.5--2.5 cm diam.; berries white (immature), 3.5 mm long, 2.6 mm diam. 12--14 per locule; seeds 7--9 per locule, whitish, oblong, 1.8 mm long, sharply tapered on one end.

Habitat

In Panama mostly in Premontane rain forest or less frequently in Tropical wet forest life zones. In Colombia, it has been collected only in tropical pluvial forest.

Distribution

Ranges from Panama to Colombia. In Panama, this taxon is restricted to both sides of the Panama Canal, ranging from Veraguas to San Blas, mostly in Premontane rain forest or less frequently in Tropical wet forest life zones, at 350 to 1000 m elevation. In Colombia, it has been collected only in tropical pluvial forest at 100 to 900 meters.

Distribution Map

 
  • Native distribution
Specimens
Found in
  • Southern America Central America Panamá
  • Western South America Colombia

  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
http://data.gbif.org
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eMonocot
http://e-monocot.org
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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