Philodendron rothschuhianum (Engl.) Croat & Grayum
  • Ann. Missouri Bot. Gard. 74: 660 (1987) 


Notes: Distribution: C. America

General Description

Hemiepiphytic to epiphytic or rarely terrestrial; stem appressed-climbing, creeping, sap watery, leaf scars conspicuous, 2 cm long, 2.5 cm wide; internodes short, semiglossy, 1.8--3 cm long, 1.5--3 cm diam., about as long as broad, gray-green, epidermis fissured; roots scurfy, few per node; cataphylls fleshy, soft, 16--23 cm long, unribbed then sharply 2-ribbed at apex, or bluntly 2-ribbed throughout or weakly 1-ribbed throughout, green, short dark striate, semiglossy, deciduous, emarginate with subapical apiculum at union of ribs at apex. LEAVES erect-spreading to spreading; petioles 33--71 cm long, 3--13(20) mm diam., subterete, moderately spongy, medium green, obtusely 1-ribbed near apex adaxially, surface weakly glossy, densely green striate; sheath inconspicuous; blades deeply 3-lobed, subcoriaceous, weakly bicolorous, gradually acuminate, long to very long acuminate at apax (the acumen inrolled, 1--2.5 mm long), more or less hastate at base, 22--42 cm long, 25--57 cm wide (0.6--1 times longer than wide), (0.5--1 times the petiole length), about two-thirds as long as petiole, upper surface semiglossy, lower surface weakly glossy, slightly paler; sinus hippocrepiform; median lobes 16--39.5 cm long, 7--20 cm wide; lateral lobes narrowly ovate, 14--28 cm long, 5--17 cm wide, directed toward apex, broadly confluent 2--5 cm with medial lobe, the margins undulate; midrib sunken to narrowly concave, paler than surface above, almost round-raised, paler than surface below; basal veins 10--15 per side, the remainder arranged in a more or less regular manner in the posterior lobe, coalesced in part throughout much of their length into a central rib; posterior rib usually not naked, sometimes naked for 1 cm, rarely to 2.5 cm; primary lateral veins 5--12 per side, departing midrib at a 50--65º angle, narrowly sunken, concolorous above, convex below; interprimary veins sunken and concolorous above, raised, almost as conspicuous as primary lateral veins below; minor veins darker than surface below, arising from both the midrib and primary lateral veins. INFLORESCENCES erect, 2--3(9) per axil; peduncle 5.2--21 cm long, 5--10 mm diam., medium green, densely lineate; spathe (6.5)8--14(16) cm long, (0.6--2.2 times longer than peduncle), markedly constricted above the tube; spathe blade pale green to greenish white to yellowish green outside, to ca. 5 cm wide when open, ca. 2.4 cm diam. at constriction, greenish white to creamy white inside; spathe tube ellipsoid, 4--7 cm long, pale green to yellowish green outside, greenish to greenish white to creamy white inside; spadix very short stipitate; somewhat protruding forward at anthesis, 10.5 cm long, constricted at base of fertile staminate portion; pistillate portion pale lime-green, 3.7 cm long in front, 2.5 cm long in back, 1--1.3 cm diam. at apex, 1.2--1.4 cm diam. at middle, 1.2 cm wide at base; staminate portion 6.4--9.3 cm long; fertile staminate portion creamy white, clavate, 1 cm diam. at base, 1.3 cm diam. at middle, 1 cm diam. ca. 1 cm from apex, usually broader than the pistillate portion; sterile staminate portion broader than fertile portion or pistillate portion, creamy white, 1.6--1.9 cm diam. at base, 1.3--1.4 cm. diam. at apex; pistils 1.6--2.6 cm long, 1.2 mm diam.; ovary 5--7-locular, 0.8 mm long, 1.1 mm diam., with sub-basal placentation; locules 0.8 mm long, 0.3--0.4 mm diam.; ovule sac 0.6 mm long; ovules 1 per locule, contained within translucent, gelatinous ovule sac, 0.3--0.5 mm long, longer than funicle; funicle 0.1--0.3 mm long, (can be pulled free to base), style 0.6 mm long, 1.2 mm diam., similar to style type B; style apex sloping to rounded; stigma brush-like, hemispheroid, 0.7--1 mm diam., 0.3--0.6 mm high, covering entire style apex; apex drying button-like, with or without radial ridges from center; the androecium truncate, oblong, more or less prismatic, margins irregularly 4--6-sided, 1--1.6 mm long, 1.5--1.9 mm diam. at apex; thecae oblong, 0.4 mm wide, more or less parallel to one another, nearly contiguous; sterile staminate flowers blunt, sometimes clavate or prismatic or irregularly 5--6-sided or 3--6-sided, 1.7--2.3 mm long, 1.6 mm wide. INFRUCTESCENCES: Berries pale green or pale yellow-green to greenish white, 4 mm long, 2.5 mm diam.; seeds 1--3, medium green, (1.2)2.1--2.3 mm long, 0.6--0.8 mm diam., within thin envelope. JUVENILE plants with petioles sheathed to about midway; blades with posterior lobes hastate, acuminate at apex, promptly auriculate on posterior margin, broadly confluent with anterior margin on anterior margin.

Habitat

It occurs in Premontane wet forest, Tropical wet forest, and less frequently in wetter parts of Tropical wet forest and Premontane rain forest life zones.

Distribution

Ranges from Honduras (Gracias a Dios) and from Nicaragua (Río San Juan, Zelaya, Jinotega and Matagalpa) to Panama (Bocas del Toro, Veraguas, and Coclé), principally on the Atlantic slope.

Distribution Map

 
  • Native distribution
Specimens
Found in
  • Southern America Central America Costa Rica
  • Honduras
  • Nicaragua
  • Panamá

  Bibliography

  • 1 Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
  • 2 Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • 3 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.
  • 4 Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua. Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.
  • 5 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.
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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
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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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