PORTULACE^E. 177 



the Santa Inez Mountains ; but to be expected in the southern 

 extension of the Mt. Diablo Range. 



* * Acaulescenl perennials ; capsules circumscis.nle at base. — 

 Subgenus Pachyrhizea, Gray. 



4. C. Grayi, Britton, Bull. Torr. Club, xvii. 312 (1890). Talinum 

 pygmieuni, Gray, Am. Journ. Sci. xxxiii. 407 (1862), also Calandrinia 

 pygmxa in Proc. Ana. Acad. viii. 623 (1873), not of^Miiller (1858). 

 Glabrous : leaves linear, 1 — 2 in. long, with short and broadly winged 

 subterranean petioles : scapes mostly simple and 1-flowered, 1 — 2 in. 

 high, with a pair of small scarious bracts: sepals suborbicular, 2 — 3 lines 

 long, glandular-toothed : petals red : capsule obtuse, nearly eqiialling 

 the calyx. — In the Sierra Nevada at 8,000 ft., from Mt. Lyell northward. 



5. C. jVevadeiisis, Gray, Proc. Am. Acad. viii. 623 (1873). Near the 

 last, but larger : scapes 1 — 3 in. high, with a pair of larger and f oliaceous 

 bracts, 1 — 3-flowered : sepals entire : petals white. — In the high Sierra 

 with the last, though of more northerly range, from Summit, Cisco, etc. 



4. CLAYTONIA, Gronuvms. Glabrous herbs, often glaucous. 

 Leaves radical except an involucral pair (sometimes united) under the 

 racemose or subumbellate inflorescence of the usually scapiform 

 peduncles. Sepals 2, persistent. Petals 5, equal, commonly united by 

 their short claws. Stamens 5, hypogynous (when the petals are distinct), 

 or each joined to the claw of its petal. Capsule membranaceous, ovoid 

 or globose, 3-valved, elastically dehiscent, each valve elastically involute, 

 ejecting the rather few black and shining seeds.— Plants inseparable 

 from the next genus except by the scapiform stems and involucrate 

 inflorescence. 



* Perennials, wUh deep-sealed tubers. 



1. C. laiiceolata, Pursh, Fl i. 175. t. 3 (1814) : C. Caroliniana, var. 

 sessiUfolia, Torr. Pac. R. Rep. iv. 70 (1857). Radical leaf lanceolate ; 

 cauline pair sessile, oblong or lanceolate to linear, 1—2 in. long : raceme 

 nearly sessile, few-flowered, often with a scarious bract at base : sepals 

 ovate, acutish : petals 2—4 lines long, emarginate or obcordate, rose- 

 color or nearly white. From near Cisco in the Sierra, Kellogg, Rev. I)r. 

 Bonte, northward. 



2. C. triphylla, Wats. Proc. Am. Acad. x. 345 (1875). Tuberous root 

 small ; stem slender, 2—3 in. high, bearing a pair, or a whorl of 3 

 narrowly linear leaves 2 in. long : fl. small, in a sessile or pedunculate 

 compound raceme : bracts minute : petals oblong, 2 lines long, 

 exceeding the rounded sepals.— Sierra Nevada, at rather high altitudes, 

 from Yosemite northward. 



* * Fibrous-rooted species. 

 •)- Perennials; pedicels axillary to manifest brads (except in n. 5). 



