202 CALIFORNIA ACADEMY OF SCIENCES. 



pais; No. 50, Bolinas Heights; No. 11 1 (C Lciuuioni). 

 Bartlett Mountain, Lake County. The range of the va- 

 riety is quite extended. It has been collected on the 

 Cuyamaca Mountains, San Diego County. 



18. Ceanothus dentatus T. & G. C. iinfrcssiis* 



Ceanothus dmtatus: branches (aud veins of the leaves beneath) tomen- 

 tose with rusty hairs, leaves much crowded and fascicled, coriaceous, 

 oblong-cuneiform, retuse, toothed, with revolnte margins, more or less 

 hairy on both sides [1-ribbed, pinnately veined]; peduncles elongated, 

 nearly terminal; thyrsias oblong, of numerous umbel-like fascicles; ovary 

 with three protuberances at the summit. California, Douglas! — Leaves 

 scarcely half an inch long, strongly and remotely feather-veined, pitted 

 beneath, irregularly and obtusely toothed. Peduncles an inch or more in 

 length. Flowers crowded, white.— Torr. & Gray, Fl. N. Am. i, 268 (1838). 



This species in its t3^pical form appears to be confined 

 to the vicinity of Monterey. It is quite possible that a 

 better knowledge of its extension and variations will show 

 that it should include C. decuinhens and its forms. The 

 general habit and texture is the same, which counts for a 

 great deal where the differences between species are so 

 very slight. No. 51, Monterey (flowers white in some of 

 the specimens). C. iuiprcssits appears to be nothing but 

 a stocky southern form growing on unsheltered sandhills. 

 Mrs. Lemmon's locality for the form is unknown, but 

 both Mr. L. Jared and Mrs. Ida M. Blochman have col- 

 lected it near San Luis Obispo. t 



* C. IMPRESSUS, n. sp. Villous, with short spreading hairs: leaves broadly 

 elliptical to nearly obicular, 6 to 8 mm. long, loosely villous, espe- 

 cially on the veins below, the upper surface deeply furrrowed over the 

 midrib and sevei'al paii-s of lateral nerves, the slightly glandular margin 

 very revohite, appearing there as if crenate: peduncles about 10 mm. long, 

 scaly toward the base: inflorescence sub-globose, compact: fruit not seen. — 

 Santa Barbara County, Cal. — Trelease in Proc. Cal. Acad., ser. 2, i, 112 

 (1888). 



JZoe, iv, 286. 



