138 BOTANY. 



Galium micbopiiyllum, Gray (PL Wright 1, p. 80). — Smooth, ascend- 

 ing, ribbed steins, quadrangular, with obtuse angles; four linear-lanceolate 

 leaves in a whorl, 3-5" long, with distinct mid and marginal nerves, some- 

 what apiculate; peduncles axillary, one-flowered, or more frequently (in my 

 specimens) proliferous from the involucre; fruit pruinose — Tanks south 

 of Camp Apache, Ariz. (271). A well-marked species. 



Galium A8PEREIMUM, Gray. — (425), from Mount Graham, Arizona, 

 appears to be a form of this, with the fruit minutely tuberculate. 



Galium asperrimum, Gray? (PL FendL p. GO). — Mount Graham, Ari- 

 zona, I 1 , 000 feet altitude (425). Ovary in my specimens minutely tuber- 

 culate, rather than hairy. Mature fruit I have not seen. Indeed, I am not 

 sure that the specimen may not prove to be 67. Aparine, to which it appears 

 closely related. If so, then it must be truly indigenous. 



Galium trifidum, L. — San Luis Valley, Colorado (15, 1G). 



Galium boreale, L. — Common and variable, in Colorado (17); Utah 



VALERIANACEJ2. 



Plectritis congesta, DC. — Nevada 



Valeriana dioica, L., var. sylvatica, Watson. — South Park, Colorado, 

 at 10,000 feet (773). 



Valeriana edulis, Nutt (V. ciliata, T. & G.) — Radical or stem leaves 

 may be entire or pinnately parted, or with any degree of division between. 

 Valerian odor is very strong in this species on boiling — South Park (774). 



COMPOSITE. 



Stevia* canescens, Benth — Erect, 4-G° high, glabrous or pubcrulent 

 below, rather roughly canescent above ; leaves linear or oblanceolate, with 

 smaller ones fascicled in their axils, serrate toward the apex, entire and 



•Stkvia, Car.— Flowers of Ibo head all perfect and tubular. Involucre of 5-6 narrow, bard, 

 Bubeqnal bracts. Receptacle flat, naked. Corollas equal, regular, slender; limb sometimes rather large, 

 5-olefb. Stamens appeudiculate, obtuse at base. Branches of the style long, slender, and obtuse. Acheuia 

 linear, 4-5-angled. Pappus of two kinds, i. c, small scales and bristle-like awns, one or both kinds present 

 in the same flower. — Herbs or erect shrubs, not uually much branched. Leaves opposite, or tbe upper 

 alternate, often 3-m rved and senate, <r sometimes 3-olefl or entire. Heads irregularly loosely paniculate 

 or in a close corymb. Flowers white or purple, sometimes a little longer than the involucre. Acheuia 

 smooth or ciliolate on the angles.— Bentham & HOOKER. 



