OP ARTS AND SCIENCES. 127 



an inch long or more. — In the Sierra Nevada; near Clark's Ranch, 

 Mariposa Co., Dr. Asa Gray; Indian Valley, Plumas Co., Mrs. M. 

 E. Piilsifer Ames. With the large flowers and loose raceme of L. 

 ornatus, but otherwise more nearly allied to the L. leucophyllus group. 



■^ LuPiNUS ONUSTUS. A span higli or less, with a decumbent and 

 somewhat wciody base, rather sparingly silky-villous : leaflets five to 

 eight, oblanceolate, acute or acutish, glabrous above, about an inch long, 

 tlie petioles two or three times longer : flowers deep blue, small (four 

 lines long), scattered in a loose short and shortly peduncled raceme ; 

 bracts short, deciduous ; pedicels slender : calyx slightly gibbous : ban- 

 ner naked ; keel strongly ciliate : pod half an inch broad, an inch and 

 a half long, 6-ovuled : seeds brown, over three lines broad. — Indian 

 Valley, Plumas Co., by Mrs. M. E. Pulsifer Ames ; Sierra County, 

 Lemmon. Most nearly resembling L. parvijiorus on a reduced 

 scale, but very distinct in its fruit. 



•' Trifolium (Lupinaster) Lemmoni.* Dwarf and cespitose, 

 alpine, sparingly appressed-pubescent, the short rather slender stems 

 from a stout thick perennial root : stipules ovate, acuminate, toothed ; 



* We give the following revision of the North American species of this 

 genus : — 



§ 1. Leaflets 5 to 7 : heads not invoUicrate, terminal and axillary : flowers ses- 

 sile : calyx-teeth filiform, plumose : low or dwarf perennials. — Western 

 species. 



•^ 1. T. MEGACEPHALDM, Nutt. Stout, somewhat villous : stipules ovate-ob- 

 long; leaflets obtuse, nearly an inch long: flowers in very large spicate heads : 

 pod smooth, 6-ovuled. — North-eastern California and Northern Nevada to Wash- 

 higton Territory. 



' 2. T. Andersonii, Gray. Cespitose, densely villous : stipules lanceolate ; 

 leaflets smaher, acute, nearly entire : flowers smaller, umbellate : pod tomen- 

 tose, about 5-ovuled. — Proc. Am. Acad. 6. 522. North-eastern CaUfornia and 

 Northern Nevada. 



3. T. Lemmoni, Watson. See above. 



§ 2. Leaflets 3 : heads not involucrate, terminal : perennial or biennial. 

 * Flowers on slender pedicels, large. — Eastern species. 



■^ 4. T. REFLEXUM, L. Not stolooiferous : leaflets obovate to cuneate-oblong: 

 flowers numerous, umbellate on the summit of the peduncle : pod stipitate, 

 4ovuled. — T. plati/cephaliim, Bisch. in Linnaea, 14. 1.32 (Litt.-Bericht.). From 

 Canada West to Florida and Texas. 



/ 5. T. STOLONiFERDM, Muhl. Stolouiferous : leaflets broadly obovate, re- 

 fuse : flowers fewer, on an evident rhachis : pod nearly sessile, 2-ovuled. — Ohio 

 and Kentucky to Missouri. 



