88 CALIFORNIA ACADEMY OF SCIENCES. 



Cotyledons co nferrii w/ in aic . 



Claytonia Virginica.* 



Claytonia triphj^la. 



The circumscissile species included in the proposed 

 Oreobroma show examples of all these different positions 

 of the embrj^o. The tetrasepalous calyx, which, accord- 

 ing to Dr. Gray, makes the only difference between 

 Lewisia and Calandrinia, fails in the variety described 

 below. Mr. Howell is, I think, quite correct in saying 

 of L. hrachycalyx, "sepals apparently 4," for the lower 

 sepals are plainly seen to be bracts, often indeed at a 

 considerable distance below the others. 



Lewisia Kelloggii. — Caudex and flesh}- root 4-5 cm. 

 long: outer bracts scarious, i/^-3 cm. long: leaves 2-3 

 cm. long; petiole thick, broad and flattened, wrinkled in 

 drying, narrowing upward, to the shorter obovate blade : 

 peduncles stout, terete, 6-15 mm. long, jointed at the very 

 base, broad at the summit : sepals 4, ovate-lanceolate, 8-10 

 mm. long, glandular on the margins : petals (9 in the only 

 flower unrolled) oblanceolate, unequal in breadth, 8-12 

 mm. long: stamens about 15 (too many in the figure), 

 style 4-5 lobed ; capsule thin, circumscissile at the base, 

 splitting upward into four or five segments ; seeds oblong, 

 2 mm. long, tuberculate in longitudinal rows, minutely 

 strophiolate near the angle of the longer side; cotyledons 

 oblique. — " Camp Yuba (Cisco), Sierra Nevada, Cal., 

 June 27, 1870. Flowers creamy white. Granitic sand 

 amoncr rocks." — Dr. Albert Kelloo-o;. 



From L. rediviva it differs in its broad leaves, narrow 

 and glandular sepals and in its peduncle jointed at the 

 very base and in its oblique cotyledons. 



* The only sijecimeii seen with ripe seeds was from New Jersey, col- 

 lected by the latellarry Edwards. No fraitina specimens seen of G. Car- 

 oliniana, lanceokda. umhellata or arctlca. 



