22 TEXAS RESEARCH FOUNDATION: CONTRIBUTIONS, VOLUME 5 
27. Peduncles or corymbs slender, long, not reduced 
ee eat, ay ger ee 54. P. venezuelana. 
26. Leaves mostly lanceolate, sometimes oblong-elliptic 
or oblanceolate, the primary lateral veins very 
slender and rather inconspicuous. 
29. Stamens 3-4 mm. long; anthers lanceolate, 
4.75-214 mm; jong (Panama). 6020.67 6.8 
en et 72. P. Secbertit. 
29. Stamens less than 3 mm. long; anthers small, 
ovate or lanceolate, 1—1.4 mm. long. 
30. Filaments longer than anthers (South 
America). 
31. Filaments 2 mm. long; anthers lanceolate, 
with one to several small blackish 
glands dorsally (Bolivia)............. 
ee es ee 73. P. angustifolza. 
31. Filaments up to 1.4 mm. long; anthers 
ovate, with small orange-punctate area 
dorsally (Venezuela)................. 
epee fees 74. P. Moritziana. 
30. Filaments shorter than anthers (Chiapas) 
Oe er ie eee 30. P. subcoriacea. 
1. PARATHESIS TRICHOGYNE Hemsl., Biol. Centr. Am. Bot. 2: 291. 1882. Fig. 1. 
Parathesis pallida Lundell, Wrightia 3: 31. 1962. 
Tree, 6-20 m. high, branchlets brownish and finely tomentose; leaves long 
petiolate, the petioles canaliculate, 1-2.5 em. long; leaf blades obovate, elliptic- 
oblanceolate or oblanceolate, 6-15 em. long, 2.5-7 em. wide, apex abruptly 
acuminate to obtusely subacuminate, base acute or acuminate, decurrent, 
chartaceous, entire, pallid, paler beneath and bizonal, pubescent on under- 
surface with fine small silky stellate appressed hairs, the hairs looser and reddish 
along costa, glabrescent in marginal zone, costa prominent and elevated beneath, 
nearly plane above, the lateral veins evident but inconspicuous; inflorescences 
terminal, paniculate, pyramidal, up to 17 cm. long, 12.5 em. wide at base, 
finely tomentose with minute red-brown branched hairs; flowers minutely 
tomentose and papillose, sometimes rather sparingly, racemose-corymbose or 
corymbose, the buds at anthesis slenderly pyriform, up to 5 mm. long; pedicels 
2-7 mm. long; calyx small, black-punctate, the sepals narrowly triangular or 
ovate-triangular, less than 1 mm. long, acutish; petals linear-lanceolate, about 
5 mm. long, black-punctate in lines, united at base, papillose-tomentose within 
apically and along margins, otherwise glabrous; stamens 3—4.2 mm. long; anthers 
versatile, dorsifixed medially, small, slender, lanceolate-oblong, 1.5-2 mm. 
long, black-punctate dorsally in narrow band, usually with a few small black 
glands in base of lobes; filaments slender, black-punctate, 2.5-3 mm. long; 
ovary tomentose, the short style 2.5-3.5 mm. long, sparsely pubescent at base; 
placenta depressed-globose, apiculate; ovules 8-14 (19), uniseriate, partly 
biseriate or pluriseriate, partially exposed. 
sl aaabilal 
