GREENMAN, — PHANEROGAMS. 471 
Il. DIAGNOSES OF NEW AND CRITICAL MEXICAN 
PHANEROGAMS. 
Tradescantia brachyphylla. Stems erect, 2 to 3 dm. high, 
branching from the base, glabrous except along a line ascending from 
the axil of each leaf: internodes 2 to 5 cm. long: leaves sessile, 
ovate-oblong, 1.5 to 2 cm, long, two thirds as broad, acute, glabrous 
on either surface, ciliate: flowers in sessile umbels terminating the stems. 
and branches ; pedicels about 1.5 em. long, glabrous or with a scat- 
tered pubescence : sepals oblong, navicular, 6 mm. long, obtusish, gla- 
brous or with a few hairs on the thickened keel: petals roseate, broadly 
ovate, obtuse, 6 to 7 mm. long, two thirds as broad: the alternating 
Stamens longer and shorter respectively ; filaments all bearded: ovary 
and style glabrous ; stigma subcapitate: mature capsule 3 mm. long: 
seeds oblong, 1.5 mm. long, rugose; embryotega dorsal. — Collected by 
C. G. Pringle on dry limestone ledges near Tehuacan, altitude 1538 m., 
29 July, 1897, no. 6679. 
TRADESCANTIA HOLOSERICEA, Kunth, Enum. Pl. iv. 92. Speci- 
mens collected by Rev. Lucius C. Smith in the Clavellinas, State of 
Oaxaca, altitude 2770 m., 26 June, 1894, no. 66, and also by C. Con- 
Zatti and V. Gonzilez on the Cerro de San Felipe, altitude 3000 m., 
25 July, 1897, no. 229, but for the larger leaves agree in all essential 
details with Kunth’s excellent description of the above species. The 
leaves in the Specimens at hand are sessile, ovate-oblong, acuminate, 6 to 
20 em, long, 2.5 to 8.5 em. broad. The flowers are violet or purple, 
and the bracts also are often more or less colored. 
Tradescantia longifolia. Dichorisandra longifolia, Mart. & Gal. 
Bull. Acad. Brux. ix. 378 (reprint p. 7). Excellent specimens of this 
Species from Southern Mexico, and agreeing well with the original de- 
scription of Martens and Galeotti, prove to be quite distinct from 
Zz. holosericea, Kunth, under which species the plant under consideration 
48 been placed as a variety. ‘The following description may be ap- 
pended ‘— roots fascicled, tuberous: stems erect or nearly so, 2 to 5 dm. 
high, simple or sparingly branched from near the base: leaves lance- 
attenuate, 10 to 15 em. long, 1.5 to 3 em. broad, villous-pubescent upon 
ither surface, strongly ciliate, especially about the margin of the sheath : 
inflorescence an open oblong racemose panicle: flowers (in the dried 
tate) 12 to 18 mm. in breadth : sepals oblong, 5 to 6 mm. long. rounded 
“t the apex: the roseate petals obovate, slightly exceeding the calyx: 
‘Stamens equal or nearly so; filaments strongly bearded: ovary glandular- 
