158 LEGUMINOS^E. Vicia. 



dark purple, 1| lines in diameter. Torr. & Gray, Fl. i. 269. V. Oregana & 

 V. sparsifolia, Nutt. in Torr. & Gray, 1. c. 270. 



Var. truncata, Brewer. Usually somewhat pubescent : leaflets truncate and 

 often 3 - 5-toothed at the apex. V. truncata, Nutt. 1. c. 



Var. linearis, Watson. Leaves all linear. Proc. Am. Acad. xi. 1 34. Lathy- 

 rus linearis & L. dissitifolius, Nutt. 1. c. 



The typical form, which ranges from Washington Territory and Oregon to New Mexico and 

 across the continent, is rarely found in California. The variety truncata is frequent from San 

 Benito County northward to Washington Territory, and in the Sierra Nevada. The variety linea- 

 ris is also common throughout California and eastward through the interior to the Rocky Moun- 

 tains. It is scarcely more than a western form of the species, as both broad and linear leaves 

 are often found upon the same plant. The species is popularly known as Pea-vine. 



V. PULCHELLA, HBK. Slender, 2 or 3 feet high, somewhat villous-pubescent : leaflets about 

 6 pairs, linear, obtuse or acute, mucronate, 6 to 9 lines long : flowers small, 3 lines long, in a 

 narrow raceme, reflexed, white or purplish : calyx membranaceous, short ; teeth very short, the 

 lower narrower and twice longer : pod linear-oblong, an inch long, 6 - 8-seeded. - Bill Williams 

 Mountain, W. Arizona (Anderson), to Texas and Mexico ; may be found in S. E. California. 



* * Slender annuals : flowers mostly solitary. 



3. V. exigua, Nutt. A span to two feet high, more or less pubescent : leaflets 

 about 4 pairs, linear, acute, a half to an inch long : peduncles usually short, rarely 

 2-flowered : flowers 3 lines long, purplish : calyx-teeth lanceolate, nearly equalling 

 the tube : pod smooth, linear-oblong, about 6-seeded. Torr. & Gray, Fl. i. 272. 



From the Lower Sacramento to San Diego ; Catalina Island (Nuttall) ; Guadalupe Island 

 (Palmer) ; and eastward to Southern Colorado and New Mexico. The similar V. micrantha, 

 Nutt. , of Texas and eastward, has usually two pairs of leaflets, and the pod is sessile. 



4. V. sativa, Linn. Rather stout, somewhat pubescent : leaflets 5 or 6 pairs, 

 obovate-oblong to linear, retuse, long-mucronate : flowers nearly sessile, an inch long, 

 violet-purple : pod linear, several-seeded. 



The Common Vetch or Tare, in cultivated fields and waste places (Coulter, Wallace) ; origi- 

 nally from Europe. 



16. LATHYRUS, Linn. 



Style dorsally flattened toward the top, and usually twisted, hairy along the 

 inner side : sheath of filaments scarcely oblique at the mouth : otherwise nearly as 

 in Vicia. Peduncles in our species usually equalling or exceeding the leaves and 

 several-flowered, in a single species short and 1-flowered. Watson, Proc. Am. 

 Acad. xi. 133. 



A hundred species or more, ranging as in the last genus. The 12 or 15 North American spe- 

 cies are perennials, with a single eastern exception. 



* Rhachis of the leaves tendril-bearing : pod sessile : racemes several-flowered. 

 -- Stipules large and broad, ovate or somewhat semi-hastate with broad lobes : glabrous. 



1 . L.; maritimus, Bigelow. Stout, a foot high or more : stipules broadly ovate 

 and halbert-shaped, acute (not acuminate), the lower lobe larger and usually 

 coarsely toothed, nearly or quite an inch long ; leaflets 3 to 5 pairs, thick, ovate- 

 oblong, 1 or 2 inches long, obtuse or acutish, nearly sessile : peduncles a little 

 shorter than the leaves, 6 - 10-flowered : flowers purple, 9 lines long: calyx-teeth 

 sparingly ciliate, subulate, the upper tooth half as long as the lower : pod about 10- 

 ovuled, 3 6-seeded, 1^ inches long or more. L. Calif ornicus, Dougl. ; Lindl. Bot. 

 Eeg. t. 1144. 



A frequent form near the sea in Washington Territory, referred to this eastern and European 

 species, may extend down the coast into Northern California. 



2. L. polyphyllus, Nutt. Less stout, 2 feet high or more : stipules smaller, 

 scarcely longer than broad, triangular, acute or somewhat acuminate ; leaflets 6 to 



