130 TEXAS RESEARCH FOUNDATION: CONTRIBUTIONS, VOLUME 5 
A distinctive, but rarely collected species, P. pleurobotryosa appears to be 
closely akin to P. vestita Lundell and P. Schultesii Lundell. 
48. PARATHESIS OERSTEDIANA Mez, Pflanzenreich IV. 236: 178. 1902. Fig. 46. 
Tree, 7 m. high, branchlets rather stout, densely ferruginous-tomentose 
with multibranched hairs, giving the branchlets a persistent rusty appearance; 
leaves with slender petioles up to 2 cm. long; leaf blades obovate, 12-22 cm. 
long, 5-9 cm. wide, apex abruptly acuminate, the acumen obtusish, base cuneate, 
decurrent, membranaceous, entire, leaf buds and young leaves pubescent on 
both surfaces with small ferruginous stellate or multibranched hairs, glabrescent 
at maturity except along the costa, the costa and primary lateral veins slightly 
impressed above, elongated beneath; inflorescences axillary, pedunculate, 
multiflowered, paniculate, the panicles 2- or 3-branched, the branches slender 
and weak, short villous and puberulent, the hairs simple or branched; bractlets 
linear and persistent; pedicels 1.5-3 mm. long, slender; flowers subcorymbose, 
puberulent, the buds slender, up to 5 mm. long; sepals less than 1 mm. long, 
acute, punctate in lines, the glands orange-black; petals very slender, linear, 
4—5.5 mm. long, punctate in lines, glabrous on inner surface except along margins 
and apically; stamens up to 4 mm. long; filaments slender, 2-2.5 mm. long; 
anthers linear, very slender, about 2 mm. long, dorsifixed one-third above base, 
base sometimes sagittate, apex minutely emarginate, concolorous dorsally or 
sometimes with several minute glands; ovary ovoid, glabrous; style glabrous, 
3.5-4 mm. long; placenta subglobose, apiculate; ovules 7, minute, uniseriate, 
enclosed. 
MEXICO.— Oaxaca: Distrito Choapam, Yaveo, trail to Arroyo Culebras, opening in coffee 
plantation, alt. 475 m., Mar. 16, 1938, Ynes Mexia 9161 (F, UC, US), tree 7 m. high, smooth 
grayish bark, slender trunk, scarlet fruit. Veracruz: prope Tontalcingo, June, 1842, F. M. 
Lnebmann 10A (C, lectotype; LL, isotype); ‘““Teotalcingo,” 1841-1843, F. M. Liebmann 15349 
(C, GH, LL, UC, probably type collection); Lacoba, June, 1842, F. M. Liebmann 10 (BM, C, 
LL, UC, US); without locality, F. M. Liebmann 15350 (C, LL); 15351 (C, LL). 
P. Oerstediana is very distinctive in having linear petals glabrous on inner 
surface except along edges and apically, slender anthers, glabrous ovary and 
style, and persistent rusty tomentum of very small multibranched hairs. 
49. PARATHESIS REFLEXA Brandeg., Univ. Calif. Publ. Bot. 6: 189. 1915. 
Fig. 47 and Plate 23. 
Shrub or small tree, branchlets rather stout, loosely ferruginous-tomentose 
with dendroid hairs; leaves with petioles 1-2.5 em. long; leaf blades narrowly 
elliptic, lanceolate or oblanceolate, 10-23 cm. long, 3-7.5 em. wide, apex sub- 
abruptly acuminate, base acuminate and decurrent, membranaceous to char- 
taceous, paler beneath, entire to crenulate, at first pubescent on upper surface 
at base and along petiole, at first floecose-tomentose beneath with dendroid 
ferruginous hairs, these sometimes somewhat appressed marginally, glabrescent 
except along the prominent midvein, the primary lateral veins slender, slightly 
impressed above; inflorescences axillary, the terminal leaves sometimes reduced 
and bract-like, 2- or 3-paniculate, long pedunculate, minutely floccose-tomentu- 
lose, with ferruginous dendroid hairs, pyramidal, 8-25 em. long; pedicels slender, 
5-12 mm. long; flowers 5- or rarely 6-merous, umbellate, minutely papillose- 
