138 BOTANY. 



Galium microphyllum, Gray (PI. Wright. 1, p. 80). — Smooth, ascend- 

 ing, ribbed stems, 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 aspereimum, Gray. — (425), from Mount Graham, Arizona, 

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



Galium aspereimum, Gray 1 (PI. Fendl. p. 60). — Mount Graham, Ari- 

 zona, 9,000 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 G. Aparine, to which it appears 

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



Galium teifidum, L. — San Luis Valley, Colorado (15, 16). 



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



VALERIANACE^ 



Plectbitis congesta, DC. — Nevada 



Valebiana dioica, L., var. sylvatica, Watson.-^-South Park, Colorado, 

 at 10,000 feet (773). 



Valebiana 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, 4-6° high, glabrous or pubefulent 

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

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



* Stevia, Cav. — Flowers of the head all perfect ami tubular. Involucre of 5-6 narrow, hard, 

 subequal hracts. Eeceptacle flat, naked. Corollas equal, regular, slender; limb sometimes rather large, 

 5-cleft. Stamens appendieulate, obtuse at base. Branches of the style long, slender, and obtuse. Achenia 

 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 usually much branched. Leaves opposite, or the upper 

 alternate, often 3-nerved and serrate, or sometimes 3-elet't or entire. Heads irregularly loosely paniculate 

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

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



