Philodendron leal-costae Mayo & G.M.Barroso
  • Aroideana 2: 82 (1979) 


Notes: Distribution: NE. Brazil

General Description

STEM: erect to decumbent and scrambling over other plants, branching basally, up to 150 cm tall, 1-2 cm diam.; adventitious roots very long and growing rapidly in all directions, extending and ramifying within leaf sheaths of neighbouring bromeliads or in shaded litter, yellowish-brown, 0.4 cm diam; internodes 3-7 cm long, smooth and grey except for apical few yellow-green internodes, bearing acuminate, recurved lateral buds, often situated halfway along internode; prophyll scars 0.1-0.3 cm long, inconspicuous; intravaginal squamules lacking; foliage leaf scars 1-1.5 cm long, inconspicuous, suborbicular, not markedly different in colour from internode epidermis. LEAF: prophyll 13-22 cm long, green linear-triangular, deciduous; petiole 12-22 cm long, 0 4 cm diam. at apex, longer than central leaflet, convex above with narrowly keeled margins, rounded below, sheath 3.5-4 cm long; leaf blade pedately compound, subcircular to transverse-elliptic in outline, overall length up to about 32 cm, overall width up to about 32 cm, divided to base; leaflets (5-)8-11, sessile, central one distant from nearest laterals, lateral ones progressively more crowded towards extremities of rachises and held spirally and suberect, upper surface dark ± glossy green, lower surface paler, no primary lateral veins present, cross veinlets of finest parallel veins fine-reticulate on lower surface in dried material, central leaflet 10-17 cm long, 2-6 cm wide, oblong-elliptic, acute to obtuse, midrib excurrent into apiculum (only in central leaflet), base subacute to rounded, first lateral leaflets inserted 0.7-2 cm from central leaflet, midrib evanescent before reaching non-apiculate apex, outer lateral leaflets progressively smaller towards extremities of rachises. INFLORESCENCE: peduncle 2.5-4.5 cm long, 1.5 cm diam. at apex; spathe 8-15 cm long, 3 cm diam. at middle, larger in fruit, ovoid-cylindric, decurrent for 1.5 cm, outer surface green with white-membranous margins, sparsely covered with brown punctate extrafloral nectaries, inner surface whitish cream; spadix 10.5-13 cm long, fertile male zone 3.7-4 cm long, 1.1 cm diam., ± cylindric, acute at apex, sterile male zone 5.5-5.8 cm long, 1.2-1.4 cm diam., subcylindric, slightly thicker towards base, female zone 1-1.5cm long, 1 cm diam. FLOWERS: stamens 2.75 mm long, 0.7 x 1.8 mm wide at apex, slightly tapering to base, stomial grooves extending almost to apex, no resin canals in connective; staminodes 4-6 per flower, 2-2.5 mm long, 1.7-2.3 mm wide at apex, ± prismatic in transverse section, flattened at apex, broadly clavate-obovate with narrow stipitate base; gynoecium 3 mm long, compressed-cylindric, ovary subcylindric, 2 mm diam., upper walls with frequent raphides, locules 3-4, ovules 1-2 per locule, inserted on axile placenta in basal third of locule, style body lacking, compitum penetrating ovary ± to level of entry into locules, surrounded by raphide concentration, 3-4 lobed in cross-section, style crown equal in width to ovary, broadly and shallowly 3-4 lobed, style lobes densely tanniniferous, central dome lacking, stylar canals very short to lacking, stigma contiguous with neighbouring stigmas, pale yellow, ± lacking tannin hairs. INFRUCTESCENCE: berry 0.8-1 cm long, 0.7-1.1 cm diam., compressed-subcylindric, scarlet when ripe, few-seeded; seed 4.6 mm long, 3-4 mm diam., ovoid to stout-cylindric, peach pink, outer integument forming sarcotesta rich in oily droplets, many raphides forming a layer in inner integument at boundary with endosperm, especially at micropylar end, embryo lageniform, 3 mm long, 1 mm diam. Figs. IB, 7, 8D, 10D, 15A, Map 4C.

Habitat

Terrestrial on rock outcrops in semi-arid thorn scrub ('caatinga') or in coastal scrub forest on sand ('restinga'), usually (?always) in association with populations of Bromeliaceae.

Distribution

NE. Brazil.

Distribution Map

 
  • Native distribution
Specimens
Found in
  • Southern America Brazil Brazil Northeast

  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 Gardens, K.""Royal Bot World Checklist of Selected Plant Families. (2008).
  • 3 Mayo, S.Joseph A revision of Philodendron subgenus Meconostigma (Araceae). Kew Bull. 46 (4), (1991).

 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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