- 



78 BOTANY OF THE DEATH VALLEY EXPEDITION. 



Folia sparaa petiolata sosquipollicaria ovalia serrulata, plonnnquo acuta, raro obtusa, reticulato 

 vcnosn, utrinqiw glabra. Petioli angnlati tomentosi. 



Inflorescentia fasciculate umbellata. Pedmicnlua axillaris solitarins subangulatns orassns tomento- 

 sus. longitudine petiolnrum, plerunique nmbcllas tres sessilos niultifloras gereiis : altera in apice, <1ii;t> 

 adlntera; pedicelP elongati imcquales toinontosi. Korea satis magni hermaphroditi. Calyx urceo- 

 larisquinquetidua; laciniis hitus carinatis. Petal* quinquo sqiiainiformia in oxcisuris oalycis, flavo 

 viridia. Stamina quinqne. Stylus sulitaiius, stigmate bifldo. Iiacca dispernia vol potius drupa bi- 

 cocca. 



Rhamnus crocea Nutt. in Torr. & Gr. Fl. i. 261 (1838). Type locality, "around 

 Monterey, California." 



The plant was seen on the south slope of Cajon Pass (No. 127), in the valley of 

 Caliento Creek, and in tho valley of the Kaweah River (No. 1299), in all eases grow- 

 ing below the chaparral licit. No. 1299 has leaves unusually large and rather 

 thinner than usual, resembling II. insularis Greene. 



Rhamnus tomentella Benth. PI. Ilartw. 303 (1818.) Type locality, "in montibns 

 Sacramento." 



The type form of this species has leaves, to translate from the original descrip- 

 tion, oblong, acuminate, entire, with recurved margins, 1£ to 2\ inches long, 6 to 9 

 lines wide, almost glabrous above, etc., and tho whole plant is described as "ilavi- 

 canti-toinentellus." In our plant the leaves are narrowly to br»adly oblong, usually 

 acuminate, the margins not involute, but closely denticulate-serrate, tomentellous 

 beneath, in ilowering specimens not exeeediag 3 cm. in length, in fruiting ones reach- 

 ing 6 cm. The same plant has been reported l from " Butte mountains, near Marys- 

 ville," Butte County. It is probable that this form will prove to he sufficiently dif- 

 ferentiated and to have a sufficiently marked range to rank as a variety of this or souk* 

 other species. It appears impossible, however, to thoroughly understand a Rhamnus 

 of this group from herbarium specimens alone. 



Specimens were collected on the western slope of Walker Pass (No. 1024). 



CeanothuB cordulatus Kellogg, Proc. Cal. Acad. ii. 124 (1861). Typo locality 

 "Washoe," Nevada. ' 



On Frazier Mountain (No. 1202), and in the valley of the Kaweah River (No. 1379). 

 This species grows usually in dense clumps about a meter high and a few meters 

 broad, with the short, spinescent branches firmly interlocked. It is a characteristic 

 shrub of the black pine belt. 



Ceanothus crassifolius Torr. Pac. R. Rep. iv. 75 (1857). Type locality, "Caion 

 Pass," California. 

 South slope of tho San Bernardino Mountains (No. 118). 



Ceanothus cuneatus (Hook.) Fl. Bor. Amer. i. 124 (1830), under Bhamnu*: Nutt. 

 in Torr. & Gr. FL i. 267 (1838). Type locality, " near the sources of the Multnomak 

 River [Willamette River, iu Oregon], in sandy soils, growing under the shade of 

 J'inus Lambertiana." 



No. 1020, which was collected on the west slope of Walker Pass, on the transition 

 ground of the desert and interior Californian floras, is a shrub about 2.5 meters hi^h 

 with the characteristic habit of C. cuneatus, but the leaves have the smaller size and 

 less cuueate character of those of C. greggii, and are similarly thicker and less con- 

 spicuously veined. 



This species was an abundant and characteristic shrub of the foothill belt on the 

 intramontane slope of the Sierra Nevada and San Bernardino Mountains. It was 

 found in Cajon Pass (No. 109), on the south slope of the Sierra Liebro (Merriam), 

 in Tejon Canon, at many points between Walker Pass (No. 1026) and Caliente and 

 in the valley of Kaweah River. 



Ceanothus divaricatus Nutt. in Torr. & Gr. Fl. i. 206 (1838). Type locality, 

 "mountains of St. Barbara, California, and also near the town." 



» Pac. R. Rep. iv. 74 (1857). ~~ 



