PEA FAMILY 505 



lanceolate or ovate, acuminate, I/2 to I14 (or 2) inches long, the lower rounded or 

 obovate, spinulose-serrate, 2 to 5 lines long; stipules broadly lanceolate, entire, % 

 to 1/2 as long as the leaflets; heads slightly elongate, 5 to 7 lines long; flowers 5 to 

 6 lines long, early deflexed, the end of the rachis produced as a sterile simple or 

 branched process 1 to 3 lines long; calyx-segments subulate or lanceolate, shorter 

 or longer than the tube; corolla rose-color or purple; pods stipitate, 1 or 2-seeded. 

 Moist caiion bottoms, 5500 to 6500 feet : Tuolumne Co. to Siskiyou and Lassen 

 Cos. East to Utah, north to Montana. June- Aug. 



Variation note. — In the Californian representation of Trifolium kingii the rachis is usually 

 conspicuously produced and branched, although sometimes it is little developed or scarcely 

 obvious. The stipe is long, often exceeding the calyx and equaling the pod. The original T. 

 kingii Wats., Watson's collection from the Wasatch Mountains, appears to be slightly different ; 

 certainly in the Utah material before us a produced rachis is not obvious and the pods are sub- 

 sessile. The "home" of T. kingii is in the meadows of the upper Humboldt Eiver according to 

 Greene (Pitt. 3:222), by which is meant, we take it, the biological center of its distribution. 



Locs. — Sonora Pass, A. L. Grant 442; Lassen Peak, CJiesnut 4' Drew; Mt. Harkness, Plumas 

 Co., Jepson 4120 ; Martin Sprs., Eagle Lake, Brown 4" Wieslander 18 ; Soldier Creek, Warner 

 Mts., L. S. Smith 841; summit above Marble Valley, Siskiyou Co., Butler 377. 



Eefs. — Trifolium kingii Wats. Bot. King 59 (1871), type loc. Parleys Park, Wasatch 

 Mts., Utah, Watson 239. Var. productum Jepson. T. productum Greene, Erythea 2:181 (1894), 

 "Mt. Shasta to Placer Co." T. Tcingii McDer. N. Am. Sp. Trifolium 281, pi. 119 (1910) ; Jepson, 

 Man. 543, fig. 533 (1925), as to Californian plants. 



28. T. bolanderi Gray. Parasol Clover. Plants 4 to 9 inches high, the nu- 

 merous stems decumbent or ascending, caespitose on the branched root-crown, 

 sparsely leafy, the leaves mostly basal; leaflets obovate or somewhat rhomboidal, 

 slightly serrulate, 3 to 8 lines long; lower leaflets broadly or fan-shaped obovate, 

 2 to 3 lines long; stipules foliaceous, broadly oblong, acute; peduncles slender, 

 elongated, occasionally axillary, 2 to 5 inches long; heads small (5 to 6 lines long), 

 the flowers relatively few, reflexed; calyx-teeth lanceolate, scarcely equaling the 

 tube; corolla lavender; ovary 2-ovuled. 



Mountain meadows, 7000 to 7100 feet: Sierra Nevada from Mariposa Co. to 

 Fresno Co. June-July. 



Locs. — This species is an endemic of narrow range and with only a few known localities 

 within that range, namely: Westfalls Mdw., above Yosemite, Kennedy 3020; Peregoy Mdw., 

 above Yosemite (Zoe 3:318) ; Clover Mdw., Madera Co., Mainwaring 505; Jackass Mdw., South 

 Pork San Joaquin Eiver, A. L. Grant 1338; North Fork Kings Eiver, Hall 4" Chandler 424. The 

 distribution altitudinally is also, apparently, within very narrow limits. Westfalls Meadow, 

 the type locality, is at the head of Alder Creek, just off the Yosemite-Wawona road about three- 

 fourths mile and directly on the (upper) Bridal Veil trail from that road. The elevation is 7100 

 feet. Although we here speak of this species as a narrow endemic, it is extremely close genetically 

 to T. kingii Wats, and its full specific status may properly be questioned. In this treatment we 

 are retaining it (although reluctantly) as a species, in contrast to T. kingii, on account of its 

 larger number of lower (or juvenile) leaves and fewer-flowered heads. 



Eefs. — Trifolium bolanderi Gray, Proc. Am. Acad. 7:335 (1868), type loc. Westfalls Mdw. 

 above Yosemite Valley, Bolander; McDer. N. Am. Sp. Trifolium 278, pi. 118 (1910) ; Jepson, 

 Man. 544 (1925). 



29. T. howellii Wats. Canon Clover. Stems stout, erect, nearly simple, 2 to 

 2% feet high; leaflets elliptic to elliptic-ovate, 11/2 to 3 inches long; stipules large, 

 foliaceous, ovate; peduncles usually slightly curved at base of head, 2I/2 to 3% 

 inches long; heads ovate or oblong, I/2 to % inch long; flowers reflexed; calyx- 

 tube % to 1 line long, the teeth subequal, subulate, 1 to l^/i lines long; corolla white, 

 4 to 7 lines long; banner ovate to oblong, obtuse or truncate; pods stipitate, usually 

 1-seeded. 



Springy places or damp thickets along streams in canons, 4000 to 5000 feet : 

 Humboldt Co. to Siskiyou Co. North to Oregon. July- Aug. 



Logs.— Grouse Mt., Humboldt Co., Trac7j; Pilot Creek, Humboldt Co., Chesnut ^ Drew; 

 Shackelford Creek, Siskiyou Co., Butler 385. 



