PEA FAMILY 



279 



Chilean. Well developed about San Francisco Bay, outside this region the plants are often 

 reduced in stature, sometimes with increased foliage pubescence, the racemes sometimes with 

 fewer whorls, the flowers sometimes smaller. Such widely distributed forms, imperfectly dis- 

 tinguishable, have been described as Lupinus subvexus var. phoeniceus C. P. Sm. (Mt. Hamilton 

 Eange), var. albilanatus C. P. Sm. (San Luis Obispo Co.), var. transmontanus C. P. Sm. (Lassen 

 Co., Modoc Co., w. Siskiyou Co.), var. insularis C. P. Sm. (Santa Cruz Isl.). These varieties, 

 as well as those segregated from L. densiflorus Benth. by C. P. Smith, do not, on the whole, 

 show geographic consistence. The following we have named as representing the species. 



Locs. — Antioch, Davy; Mt. Di- 

 ablo, Jepson 9214; Eichmond, K. 

 Brands g ee ; San Francisco, Tide- 

 strom; Livermore Pass, Davy; Pa- 

 checo Pass, Jepson 12,740 ; upper 

 Waltham Creek, w. Fresno Co., Jep- 

 son 16,164 ; Palo Prieto Pass, e. San 

 Luis Obispo Co., Jepson 16,199; 

 Carrizo Plain, e. San Luis Obispo 

 Co., Jepson 12,014; O'NeU ranch. 

 Orange Co., Malmsten. 



Var. densiflorus Jepson comb. n. 

 Gully Lupine. (Fig. 190.) Flowers 

 spreading, becoming secund after 

 anthesis with the bending over of 

 the raceme ; petals white, yellow, or 

 sometimes purple or rose-color. — 

 Banks of gullies, hillslopes, land- 

 slips, 50 to 2500 feet: widely dis- 

 tributed in cismontane California. 

 Apr.-May. 



This variety is on the whole ex- 

 tremely uniform in aspect, in habit, 

 in foliage, essential character of 

 trichomes, racemes, flowers and 

 fruits. The f ollovnng structural de- 

 tails are so variable within even a 

 small group from the same locality, 

 or in the same individual, that fail- 

 ing association with other more con- 

 stant characters, they are of no 

 value or little value in making segre- 

 gates of this variety, namely : length 

 and number of hairs and their di- 

 rection; degree of succulence of 

 stem ; shape and toothiag of calyx- 

 lips or absence of toothing; color of 

 corolla; shape or curvature of keel, 

 and presence or absence of cilia on 

 lower margin; shape of banner, 

 whether gradually or abruptly con- 

 tracted at base, or rounded or con- 

 tracted at apex ; presence or absence 

 of cilia on upper basal angle of 

 limb of wings. For example, we 

 refer to the following forms, named 

 by authors as varieties of L. densi- 

 florus Benth. : the var. palustris C. P. Sm., with deep purple petals, occurs m low ground near 

 the ocean from western Contra Costa Co. to Monterey (Eichmond; Berkeley; Alameda; Watson- 

 TiHe, coast w. of, C. F. BaTcer 3009), but Eichmond spms., authentically named, have corollas 

 dark purple to white, with the lower calyx-lip from typically bifid to the extreme tnfid condition 

 assigned to var. stanfordianus C. P. Sm. Var. crinitus Eastw. is markedly villous and has 2 to 4 

 whorls to the racemes; it occurs near the ocean from DUlons Beach, Marin Co., to Bodega, Sonoma 

 Co. Eecent collections of more vigorous plants often show 7 whorls, instead of "2 to 4, which might, 

 almost, have been predicted. Var. menziesii C. P. Sm., characterized by its fistulous stems, very otten 

 does not have fistulous stems, though the petals are commonly yellow (Venado, w. Colusa Co., Jep- 

 son 16,264; Pt. Isabel, Berkeley, H. A. WalTcer 108). The varieties macgregon and altus have 

 smaUer flowers, the former with straight, the latter with curved keel. Such keel differences are, 

 however, of slight importance. In the var. glareosus C. P. Sm., the leaflets blacken in drying, 



Fig. 190. Lupinus microcarpus Sims var. densiflorus 

 Jepson. a, habit, X Vs ; b, upper lip of calyx, X 2 ; c, 

 lower lip of calyx, X 2 ; d, banner, X 11/2 ; e, wing, X IV2 ; 

 /, keel, X 11/2; g,V^^, X 1- 



