PEA FAMILY 



301 



Flower note. — The pedicels, which are about IVz lines long, are soon retrocurved ; the 

 peduncles are also somewhat curved at apex; the result being that the flowers of a head, all 

 turned in one direction, lie horizontally, the pedicels tending to cross the peduncle. The erect 

 or ascending peduncle thus seems to support the head on its side. This clover is therefore quite 

 unlike any other on account of this peculiarity of the head. The structure of the head in T. 

 eriocephalum Nutt. and T. lemmonii Wats, is broadly similar but not identic. 



Locs. — Fresno Big Trees, Jepson 15,974; Mariposa Big Trees, Congdon; Crane Creek, Yosem- 

 ite, Jepson 4651; Wheelers, Tuolumne Co., Chesnut 4" Drew; Calaveras Big Trees, Jepson 10,077; 

 Sierra Valley, Lemmon ; Quincy, 

 Jepson 4147 ; Colby, Butte Co., E. 

 M. Austin; Big Mdws., Plumas 

 Co., B. M. Austin; Silver Lake, 

 Lassen Co., Baker 4" Nutting; Mt. 

 Shasta, F. W. Morse ; Coffee Creek, 

 Salmon Mts., Ball 8536. 



Kefs. — Teifolium breweei 

 Wats. Proc. Am. Acad. 11:131 

 (1876), type loc. Clark's (=Wa- 

 wona), Mariposa Co.; McDer. N. 



Am. Sp. Trifolium 304, pi. 128 <f^^^ \ "^^^ h 



(1910), incorrectly illustrated 

 from a spm. of T. gracilentum; 

 Jepson, Fl. W. Mid. Cal. ed. 2, 

 226 (1911), Man. 542 (1925). 



19. T. lemmonii Wats. 

 Poet's Clover. (Fig. 198.) 

 Stems rather slender, 6 to 8 

 inches high, from a thick 

 root ; leaflets obovate, obtuse, 

 mucronate, coarsely toothed, 

 3 to 6 lines long; stipules 

 ovate, acuminate, coarsely 

 toothed; peduncles mostly 

 terminal, 2 to 5 inches long, 

 far exceeding the leaves; 

 heads 10 to 15 lines broad; 

 flowers numerous, 4 to 7 lines 

 long; calyx pubescent, its 

 tube 1 to 2 lines long, the 

 teeth subulate, nearly equal, 

 11/2 to 1% times as long as 

 tube ; corolla bright yellow, 5 

 lines long; banner somewhat 

 concave above or a little 

 hooded, rounded at apex and 

 retuse, with a short point in 

 the notch; wings abruptly lanceolate-acuminate at apex; ovary slightly pubes- 

 cent, 2-ovuled. 



Mountain valleys, 5000 to 7000 feet : eastern crests and slopes of the Sierra 

 Nevada from Sierra Co. to Lassen Peak. June-July. 



Tax. note. — Trifolium lemmonii Wats, is genetically very close to T. gynmocarpon Nutt. It 

 is separable from it by habit and by quantitative rather than qualitative characters. T. lemmonii 

 is taller with longer peduncles which must exceed the foliage; it has larger heads with more 

 flowers which are slightly larger and more regularly reflexed. The petioles are longer, the leaflets 

 somewhat broader, and the pubescence is in general somewhat shorter and less dense on the 

 lower surfaces of the leaflets and on the calyces and ovaries, than is the case in T. gymnocarpon. 



Locs. — Dog Valley, e. Sierra Co., Sonne; Sierra Valley, Lemmon. 



Eefs.— Trifolium lemmonii Wats. Proc. Am. Acad. 11:127 (1876), type loc. Lassen Peak, 

 Lemmon; Jepson, Man. 545 (1925). T. gymnocarpon var. lemmonii McDer. N. Am. Sp. Trifolium 

 194, pi. 78 (1910). 



Fig. 198. Trifouum lemmonii Wats, a, habit, X Vs ; 

 6, fl., X 3 ; e, calyx spread open, X 6 ; d, banner X 3. 



