128 LEGUMINOS.'E. Trijolium. 



leilexed, half an inch long, "white": calyx very villous; its teeth straight and 

 equalling the corolla: ovary smooth, 4-ovuleil. — Hook. FI. i. 130, t. 41). 



In Oregon uiul Contial Idaho {Duiujlan, NuUall, i)jJutUintj), but not yot detected in Culifornia. 



0. T. longipes, Nutt. Erect or ascending, slender, uhout a span high : stem 

 usimlly gluhroiiH, tlie Icallcts uuti calyx rti»ariugly villous : stipules laosily narrow, 

 entire or toothed ; leallets narrowly oblong to linear, usually very acute, about an 

 inch long, serrulate : flowers spicute or very shortly pedicellate in smaller and less 

 dense ovate heads, at length usually retlexed, 5 or G lines long, ochroleucous or 

 tinged with purple : calyx-teeth straight, more or less hairy, shorter than the corolla : 

 ovules 2 to 4. — Torr. (fe Gray, Fl. i. 314. 



Var. latifolium, Hook. Leaflets broader : Howers obviously pedicellate, in 

 loose heads ; stems otl(!n low. — Lond. Jour. Bot. vi. 209. Var. pyyvutum, (hay, 

 liot. Ives Colorado Fxp. U. 



Moist meadows in the Sierra Nevada, from Yosemite Valley and above Mono Lake to the Brit- 

 ish boundary, and east to the Rocky Mountains. The variety sometimes takes on the aspect of 

 T. rejjeuis, but the calyx is always hairy and the teeth slender. 



T. PKATENSE, Linn. (Kicu Clovku.) Steins ascending, somewhat hairy : stipules bristle- 

 pointed ; leaflets oval or obovate, obtuse or emarginate : heads large, ovate, sessile : calyx-teeth 

 lax, shorter than the corolla : ovules 2. — Native of the Old World, extensively cultivated, and 

 perhaps the must valuable species of the genus. It belongs to a cooler and moister climate than 

 ours, but is cultivateil in some parts of the State. Tliero are several varieties, dilieiing chiefly in 

 size and time of liowering. 



* * Glabrous throughout : calyx-teeth subulate, rigid, contorted, twice longer tlian the 



tube : Jlowers sessile : stipules lanceolate, acuminate. 



7. T. altissimiiiu, Dougl. Erect, stout, a foot high or more : stipules very 

 long, toothed ; leaflets narrowly oblanceolato, very acute, two inches long, strongly 

 veined, the veins excurrent : flowers in dense oblong or ovate spikes, at length 

 somewhat rellexed, G to 8 lines long, red : lower calyx-tooth straight, the rest curved 

 or twisted downward : ovary smootli, 2-ovuled. — Hook. Fl. i. 130, t. 48. 



Mountains of Oregon and Central Idaho ; to be looked for in Northern California. 



* * * Glabrous throughout : calyx-teeth scarcely longer than the tube : stipules mostly 



ovate, acute, entire : Jlowers on very short pedicels, at length rejlexed. 



8. T. Beck'withii, IJrewer. Stems stout, ascending, a foot high or more : stip- 

 ules lanceolate to ovate ; leaflets oblong to oblanceolate, obtuse or acute, serrate, 1 

 or 2 inches long : floAvers on very short })edicels, 7 to 9 lines long, in large dense 

 globose heads, red : calyx-teeth linear-subulate, straight, equalling the tube : ovary- 

 smooth, 2-G-ovuled. — Watson, Proc. Am. Acad. xi. 128. 2\ altissimum, Torr. & 

 Gray in Pacif. R. Pep. ii. 120. 



In the northern Sierra Nevada {Bcckwith) ; Sierra Co. {Lcmmon) ; Humboldt Valley, Nevada 

 {Gray) ; Snake Country, Burke. Perhaps a large and stout form of the next. 



9. T. Kingii, Watson. Pesembling the last, but smaller and more slender, with 

 smaller heads, and usually acuter leaflets : rhachis often producetl above the head, 

 with a few 8i)ine3cent bracts : flowers 4 to 7 lines long, rose-colored or purplish : lower 

 loaves (as in other species) often rounded or obovate. — Pot. King Exp. 59. 'J'. Hay- 

 deni, I'orter in llayden b'ep. 1871, 480. 



In the Sierra Nevada, at Summit (BoluiuLr) and Sierra I'o. {Lemiimn), and in the mountains 

 eastward to Montana and Utah. 



10. T. Bolanderi, Gray. Cespitose, small, the short stems decumbent : leaflets 

 obcordate to cuneate-oblong, half an inch long or less, very finely reticulated, slightly 

 serrulate : peduncles slender, elongated, occasionally axillary : heads small ; the 

 purplish flowers few, 3 or 4 lines long : calyx-teeth lanceolate, scarcely equalling 

 the tube : ovary smooth, 2-ovuled. — Proc. Am. Acad. vii. 335. 



