Philodendron microstictum Standl. & L.O.Williams
  • Ceiba 3: 108 (1952) 

Notes: Distribution: Costa Rica

General Description

Hemiepiphytic vine, stem scandent, green to gray-green, drying pale yellowish brown, unscented, leaf scars inconspicuous, 1.2 cm long, 8 mm wide, obscured by cataphylls; internodes smooth, semiglossy, 6--12 cm long, 1--2 cm diam., longer than broad, moderately green, drying khaki-colored, epidermis fissured transversely; roots drying light reddish brown, smooth, weakly glossy, 20--30 cm long, 2--3 mm diam., 4--6, at the nodes; cataphylls subcoriaceous, bluntly 2-ribbed or unribbed, pale green to cream-colored, promptly deciduous. LEAVES: Petioles 12--24 cm long, 2--4 mm diam., subterete to broader than thick to broadly D-shaped, weakly spongy, bluntly flattened to broadly sulcate adaxially, rounded abaxially, with adaxial margins blunt, surface pale or dark green streaked and demarcated from blade by dark green ring around apex; blades broadly ovate, moderately coriaceous, abruptly acuminate at apex (the acumen tightly inrolled, 1--4 mm long), weakly subcordate at base, 12.5--30 cm long, 13--21.5 cm wide (0.7--1(1.7) times longer than wide), (0.65--2 times longer than petiole), about equal in length to petiole, broadest more or less near the middle, margins straight, upper surface dark green, semiglossy, somewhat pruinose, lower surface glossy to weakly glossy, paler; anterior lobe 12--20.5 cm long, 10.7--22 cm wide (1.85--3 times longer than posterior lobes); posterior lobes 4--8 cm long, 3.5--9.5 cm wide, broadly rounded to obtuse; sinus arcuate, sometimes parabolic, 3.4--6 cm deep; midrib broadly convex to weakly raised, concolorous to paler than surface above, weakly to broadly convex, paler than surface below; basal veins about 3 per side, obscurely and scarcely more conspicuous than primary laterals; posterior rib lacking; primary lateral veins (3)4--5 per side, obscure above; minor veins about as conspicuous as the primary laterals, arising from the midrib only. INFLORESCENCES spreading, as long as leaves, 1 per axil; peduncle 14--25 cm long, 2--6 mm diam., subterete, green; spathe 6.5--15 cm long, (0.3--1 times longer than peduncle); spathe blade green outside, pale green inside; spathe tube ca. 5 cm long, green outside, red or violet-purple inside; spadix sessile, 8 cm long, broadest below the middle; pistillate portion medium green to pale greenish yellow, more or less cylindrical, 1.9--2 cm long, 6.5--7 mm diam. at apex, 7--8 mm diam. at middle, 6.5--7 mm wide at base, with 13 (per cm) flowers per spiral; staminate portion 5.9--8.3 cm long; fertile staminate portion white, tapered toward apex, 5--9 mm diam. at base, 5--6 mm diam. at middle, 0.9 mm diam. ca. 1 cm from apex, broadest at the base, mostly narrower than the pistillate and sterile portions; sterile staminate portion broader than the pistillate portion, 6--9 mm diam.; pistils 1.2--1.4 mm long, 0.8--1.1 mm diam.; ovary 6--7-locular, 0.8--1 mm long, 0.8--1.1 mm diam., with sub-basal placentation, walls drying weakly warty; locules 0.8 mm long, 0.3 mm diam., ovule sac 0.7--0.8 mm long; ovules 1 per locule, contained within transparent ovule sac, 0.4 mm long, as long as funicle; funicle 0.4 mm long; style 0.2 mm long, 1 mm diam., similar to style type B; style apex flat; stigma unlobed, subdiscoid to somewhat cylindrical, 0.8--0.9 mm diam., 0.2 mm high, covering almost entire style apex, centered on stylar canal pores; the androecium truncate, margins irregularly to bluntly 4--6-sided, 1.2 mm long, 0.8 mm diam. at apex; thecae more or less cylindrical, 0.3 mm wide, more or less parallel to one another, contiguous; sterile staminate flowers acutely or bluntly and irregularly 4--6-sided, 1.2--2 mm long, 0.7--1.1 mm wide. INFRUCTESCENCE with fruits whitish. Seeds (dried) ca. 20 per locule, tan, 1--1.2 mm long, 0.5--0.6 mm diam., finely ridged with much finer cross-etching.


In wetter parts of Tropical moist forest, Tropical wet forest (T-wf), and Tropical wet forest basal belt transition life zones.


Endemic to Costa Rica (though to be expected on the Burica Península in adjacent Panama), where it is restricted to the Pacific slope.

Distribution Map

  • Native distribution
Found in
  • Southern America Central America Costa Rica


  • 1 Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • 2 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.
  • 3 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
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
  • B All Rights Reserved
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
  • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 2011 onwards
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