173 
In woods and fields, North Carolina to Tennessee, south to 
Florida and Alabama. Apriland May. Ascends to 950 metres 
in North Carolina. Trillium sessile and Trillium Underwoodit are 
remarkably constant in comparative size. The two species can 
readily be segregated on size and habit alone and of course com- 
parative measurements of organs would serve as an excellent basis 
of separation. But this is not necessary since we have such 
good specific characters as exist in the flower, especially as re- 
spects the stamens and styles. 
4. TRILLIUM VIRIDE Beck, Am. Jour. Sci. 11 17 78. 1826. 
Trillium viridescens Nutt. Trans. Am. Philos. Soc. (II.) 5:155. 
1837. 
Trillium sessile var. Nuttallii S. Wats. Proc. Am. Acad. 14; 273. 
1879. 
Perennial by a short corm-like rootstock, bright green, more or 
less pubescent. Stems solitary, or several together, 1-4 dm. tall, 
purple, rough-pubescent at least near the top; leaves oblong, ovate, 
or broadly ovate, 5-11 cm. long, acute or obtusish, 3—5-nerved, 
usually blotched, more or less pubescent on the nerves beneath, 
abruptly short-attenuate at the base; flowers sessile ; sepals linear 
or linear-lanceolate, 2.5—-5 cm. long, bright green, acute or obtuse, 
erect or spreading; petals clawed, the blades linear or nearly so, 
2.5—-6 cm. long, surpassing the sepals, light green or purplish green, 
acute or obtuse, on brown or purple claws; stamens about 4 as long 
as the petals; filaments flattened, 1-1 shorter than the anthers ; 
berry not seen. 
In woods and glades, Missouri to Tennessee, south to Missis- 
sippi and Arkansas. April and May. 
Prof. Beck published a good description of this species in the 
year 1826. Mr. Nuttall described an apparently extreme form 
of the same species eleven years later. With these two full de- 
scriptions and the original specimens of Mr. Nuttall extant, it _ 
seems strange that Zrillium viride Beck, and Trillium viridescens 
Nutt., being one and the same species, should, on the one hand, 
be made a synonym and on the other a variety of a species to 
which it is only distantly related ; the clawed petals, among many = 
other characters, primarily prevent it being associated with Zi/- 
lium sessile. Its true relationship is with Zri#lium recurvatum, —— 
Mr. Nuttall collected the original specimens of Trillium aren 
