LUNDELL: THE GENUS PARATHESIS 83 
2443 (A, F, LL, MICH, NY), treelet, 114 in. diam., 10 ft. high; Vaca, at base of hill, May 13, 
1938, Percy H. Gentle 2615 (LL, type of P. platyphylla; A, F, MICH, NY, isotypes), tree, 3 in. 
diam., fis. red. 
HONDURAS.—InperinitE: near Lake Yojoa, July 29-Aug. 10, 1951, R. Howard, W. 
Briggs, P. Kamb, I. Lane, & R. Ritland 665 (A), riverbank shrub, 8 ft., peduncles and pedicels 
lavender, flowers reddish, fruit clear, translucent. 
Of the species with flowers corymbose-racemose in late flowering stages, 
P. Donnell-Smithii represents the extreme of this development. As flowering 
progresses, young fruits form at the base of the accrescent rachis. Noteworthy 
also is the reduction in flower size as flowering progresses, the first flowers are 
largest, the last reduced in size. The open large inflorescences and slender pedicels 
contrast markedly with the closely related P. brevipes Lundell. 
P. platyphylla was described from early flowering material in which the rachis 
of the corymb has not elongated. The type is more pubescent than the type of 
P. Donnell-Smithii. It is perhaps a distinct taxon, but needs to be studied in the 
field. 
26. PARATHESIS EMARGINATA Lundell, Wrightia 2: 64. 1963. Fig. 26. 
Tree, up to 16 m. high, branchlets rather stout, appressed-tomentose with 
fine brownish stellate hairs, glabrescent; leaves with petioles 1-2 cm. long, the 
petioles finely tomentose beneath, sparsely papillose above at first; leaf blades 
elliptic or obovate-elliptic, 10.5-19 em. long, 4—7 em. wide, apex abruptly short 
acuminate, the acumen acute, narrowed to a cuneate decurrent base, the margin 
repand and obscurely crenulate, membranaceous, black-punctate, slightly paler 
beneath, drying dark brown, bizonal, sparsely papillose above at first, pubescent 
on undersurface with fine stellate appressed ferruginous hairs, the marginal 
zone glabrescent early, the entire undersurface glabrescent with age, costa 
elevated beneath, the lateral veins slender but conspicuous on undersurface; 
inflorescences terminal, tripinnately paniculate, 9-15 em. long, papillose-puberu- 
lent and sparingly tomentose with small sessile stellate hairs; flowers subcorym- 
bose; pedicels 2.5-5 mm. long, densely papillose; flower buds before anthesis 
ovoid, about 5 mm. long, densely papillose-puberulent; sepals ovate-triangular, 
about 1 mm. long, acute or short acuminate, black-punctate; petals linear- 
lanceolate, up to 5.5 mm. long, united at base, black-punctate in lines, papillose- 
tomentose within along margins and above middle; stamens about 3.8 mm. long; 
filaments stout, 1.8-2 mm. long; anthers erect, oblong-lanceolate, 1.8-2.2 mm. 
long, dorsifixed, with a triangular black-punctate area above attachment, and 
with glands extending into lobes, apex rounded and shallowly emarginate, 
sometimes with a tuft of hairs ventrally at apex, grooved dorsally; ovary to- 
mentose above with rather stiff hairs; style with hairs almost to middle, 4 mm. 
long; placenta obovoid, depressed; ovules 6-8, minute, subglobose, erect, 
uniseriate, enclosed. 
COLOMBIA.—Macpatena: Santa Marta, Cacagualeto, common in deep wooded valleys, 
especially near streams, alt. ca. 500 m., May 15, 1898-1901, Herbert H. Smith 444 (F, type; 
BM, LL, MICH, NY, US, isotypes), flowers in May and June. 
The type collection, Smith 444, is a mixture of P. emarginata and P. reticulata 
var. stnuata Lundell. 
The emarginate anthers grooved dorsally at apex and often bearing a tuft of 
