Philodendron aromaticum Croat & Grayum
  • Ann. Missouri Bot. Gard. 84: 403 (1997) 

Notes: Distribution: Costa Rica

General Description

Usually epiphytic, sometimes hemiepiphytic (often occuring high in canopy), rarely terrestrial (accidentally); stem usually appressed-climbing, creeping, brownish, sap sweet, turpentine- to burseraceous-scented; internodes weakly glossy, minutely striate longitudinally, 2--3 cm long, 1.5--3.5 cm diam., usually broader than long, dark to medium green, drying brown, epidermis fissured longitudinally; roots moderately few, drying reddish brown; cataphylls sharply 2-ribbed, D-shaped, deciduous, margins sharply raised. LEAVES erect-spreading to spreading; petioles 33.5--66 cm long, more or less terete, somewhat spongy, dark green, obtusely to weakly flattened adaxially, surface weakly glossy, not noticeably marked, drying 8--15 mm diam., usually greenish dark brown; blades ovate-cordate, subcoriaceous, glossy, weakly bicolorous, acuminate to long-acuminate at apex (the acumen inrolled, 7--11 mm long), cordate at base, 35--55 cm long, 17--26 cm wide (2.1 times longer than wide), (0.8--1 time longer than petiole), margins weakly undulate; upper surface dark green, semiglossy, drying gray-green, lower surface glossy to semiglossy, paler, drying green to brownish green; anterior lobe 30.5--41 cm long, 16--26 cm wide (2.6--2.9 times longer than posterior lobes); posterior lobes 10.5--15.8 cm long, 7--13 cm wide, rounded at apex; sinus spathulate, 12 cm deep; midrib flattened, slightly paler than surface above, raised to convex, paler than surface below; basal veins 5--6 per side, with none or rarely 1 free to base, two to three veins coalesced 2.7--5.5(6.3) cm; posterior rib naked for 4 cm; primary lateral veins 5--7 per side, departing midrib at a 70--80º angle, straight to the margins, weakly and narrowly sunken above, convex and paler than surface below; minor veins moderately obsure to clearly visible below, arising from both the midrib and primary lateral veins. INFLORESCENCES 1 per axil; peduncle 4.5--9.4 cm long, 0.08--0.15 cm diam., green, weakly striate; spathe semiglossy, 15--20 cm long, (2.1--3.3 times longer than peduncle), constricted above the tube, dark green throughout, pale maroon to white inside; spathe tube oblong-ellipsoid, weakly wrinkled longitudinally outside, 6--9 cm long, dark maroon, suffused onto blade inside; spadix sessile; greenish white to white throughout, oblong, 12--16.9 cm long; pistillate portion creamy white to pale green, cylindrical, 5--13 cm long, 6--12 mm diam. at apex, 12 mm diam. at middle, 5--10 mm wide at base; staminate portion 7--11 cm long; fertile staminate portion white, ellipsoid, 1 cm diam. at base, 1.4 cm diam. at middle, 6 mm diam. ca. 1 cm from apex, broadest at the middle, slightly broader than the pistillate portion, narrower than the sterile portion; sterile staminate portion broader than the pistillate portion, white, 1.5 cm diam.; pistils 3 mm long, 1.1--1.3 mm diam., ovary 9--10(11)-locular, 1.8 mm long, 1.2 mm diam., with sub-basal placentation; ovules 2--3 per locule, contained within translucent or transparent ovule sac, 0.3 mm long, more or less equal in length to funicle, style similar to style type B; style crown about as broad as ovary; central style dome well developed; style apex with central domes; stigma discoid, weakly lobed, 1.1 mm diam., 0.2--0.3 mm high, covering entire style apex, depressed medially; the androecium margins mostly 5-sided, sometimes 4--6-sided; thecae oblong to ovate, 0.4 mm wide.


Tropical wet forest life zone.


Endemic to the Atlantic slope of northwestern Costa Rica.

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 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.
  • 4 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
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
  • B 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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