

CATALOGUE OF SPECIES. 67 



and leaflet. The anthers differ from thos;^ figured in the original drawing in being 

 more or less sharply recurved. The plant is very abundant in the pure, not alkaline 

 sand northeast of Keeler (,No. 847), washed down on the mesa from Cerro Gordo 

 Mountain, and it occupies large areas of this soil to the exclusion of nearly all other 

 species. The larger specimens are often 50 cm. high. 



Cleomella brevipea Wats. Proc. Amer. Acad. xvii. 365 (1882). Type locality, 

 "at Camp Cady in the Mohave Desert, California." 



None of the capsules in the type specimens have the horns developed, but are as 

 originally described, "ovate 1.5 lines long." Some of the capsules in our specimens 

 have this form, but others, evidently the normally well-developed ones, are rhoni- 

 boidal or triangular (truncate at the base) in outline, and reach 4.5 mm. in breadth 

 by 2.5 mm. in length. The pla.its grow abundantly in the strongly salt and alkaline 

 soil in the meadows of Diatichlia splcata, between the town of Keeler and the shore 

 of Owens Lake (Nos. 853, 884). 



This species has not been reported since the Parish Brothers found the typo 

 specimens. 



Cleoniella obtusifolia Torr. A- From, in Frem. second Rep, 311 (1815). Type local- 

 ity, "on the American fork of the Sacramento river." 



The correctness of the- locality given by Fremont for this plant has been for many 

 years a doubtful one, and it has been supposed that he found it in the Mohave 

 Desert region. The plant has been collected again, however, within the past lew 

 years, in the valley of the Sacramento, and this species may now be placed definitely 

 in that group of plants, significant from tin; standpoint of geographic botany, which 

 occur both in the great interior valley of California and in the deserts eastward 

 from the Sierra Nevada. The species was met with by the expedition only about 

 Keeler (No. 852) and on the west shore of Owens Lake, between Lone Pine and 

 Olacha. It undoubtedly occurs in other parts of the desert traversed by the expe- 

 dition, but was not in condition for identification at the time. 



Cleomella parvifiora Gray, Proc. Amer. Acad. vi. 520 (1805). Type locality, "Ne- 

 vada, near Carson City." 



Our specimens reach a height of 32 cm,, and the stems and branches, although weak 

 and flexuous, are nearly erect. The leallets are sometimos 3 cm. long, usually obtuse 

 and mucronate, but sometimes broadly acute. The plants grew in the moist, slightly 

 alkaline, natural meadow directly in front of the ranch house at Haway Meadows 

 (No. 1003). 



Isomeris arborea Nutt, in Torr. & Gr. Fl. i. 124 (1838). Type locality, "St. 

 Diego, California." 



The backs of the leaves, especially when young, are more roughly short-pubescent 

 than in any specimens seen from the west side of the Sierras. The plant was not in 

 all eases distinguished in the field from /. arborea glohosa, so that some of the few lo- 

 calities recorded may belong to that variety. The shrub was first seen between the 

 summit and middle stations on the road from Mohave to Searles's, and afterward in 

 Tehachapi Gallon (No. 1132), near Gorman Station, and at the mouth of the Canada de 

 las Uvas. The two desert stations are in the upper part of the Lurrca belt, the last 

 two in the belt of Querents dvuylaxii. 



Isomeris arborea globosa Coville, Proc, Biol. Soc. Wash. vii. 73 (1892). Type 

 locality as given below. Plate IV. 



" Stem not glaucous ; petals ovate, sub-palruately veined ; capsule globose, truncate 

 or retuse, 2.5 to 3.5 cm, long ; seed with a transverse groove between hiluru and body ; 

 otherwise as the type form. 



"Our plant ditl'ers conspicuously from the type form in the shape of its capsules, a 

 character at once noticeable in the living plant. The stems of the new .year's growth 

 in the type form are glaucous; the petals narrowly oblong and p innately veined ; 



