506 HYDROPHYLLACE.E. Phacelia. 



once or twice 2-forked or 2 — 4-rayed cyme, short-pedicelled : corolla purplish. — 

 Gray, Proc. Am. Acad. vii. 401, & x. 316. Nama systyla, Gray, 1. c. vi. 37. 



Not rare in shaded and wooded ravines in the Sierra Nevada, at the elevation of 4,000 to 5,000 

 feet, from the Yosemite to Placer Co.' Corolla less than half an inch long. This interesting genus 

 was dedicated by Dr. Torrey to the distinguished Professor Draper of New York. 



5. PHACELIA, Juss. 



Calyx deeply 5-parted ; the divisions usually narrow and similar. Corolla from 

 almost rotate to narrow-funnelform, deciduous, commonly with appendages upon the 

 inside of the tube in the form of 10 vertical plates or lamella? approximate in pairs 

 between the bases of the filaments, or else udnate more or less to their base one on 

 each side. Stamens equally inserted low down or at the base of the corolla. Ovules 

 and seeds from 4 (a pair to each placenta) to very numerous. — Herbs, mostly 

 branched from the base ; with simple or compound alternate leaves, or the lower 

 opposite, and more or less scorpioid spicate or racemose cymose inflorescence. Co- 

 rolla blue, violet, purple, or white, never yellow, except sometimes the tube or 

 throat. 



As now received (see Proc. Am. Acad. x. 316), this genus comprises nearly half the order, viz. 

 about 50 N. American species and two or three of Mexico and Chili. One, the earliest-described 

 species, is common to the two continents and ranges almost throughout their length. The genus 

 is mainly western, and is largely represented in California and along its borders. 



§ 1. Ovules and seeds only 4, a pair to each placenta. — Euphacelia, Gray. 



* Lower leaves opposite : spikes or branches of the cyme hardly at all coiling {or scor- 

 pioid), destitute of hispid or hirsute hairs : corolla-appendages, at base of filament 

 short. 



1. P. namatoid.es, Gray. Annual," barely a span high, with opposite ascending 

 branches, glabrous and glaucous below, glandular-pubescent above : leaves nar- 

 rowly lanceolate, entire, tapering into an obscure petiole, opposite or nearly so ; the 

 uppermost only alternate, equalling or surpassing the rather loose cyme or its spike- 

 like divisions : corolla narrow-campanulate, blue, a little longer than the calyx : 

 stamens and at length deeply 2-parted style included. — Proc. Am. Acad. x. 316. 

 Nama racemosa, Kellogg, Proc. Acad. Calif, v. 51. 



AVooded region of the Sierra Nevada, from Calaveras grove to Summit Station, Bolander, 

 Kellogg. Corolla and globular capsule each only a line or so long. Seeds alveolate-reticulated. 

 A genuine Phacelia in structure, with the aspect of Nama. 



* * Leaves all but the very earliest alternate (as in the genus generally) : pubescence 

 or some of it hispid or hirsute, especially the inflorescence of spikes conspicuously 

 coiled in the bud, and mostly in pairs or cymose-clustered : internal appendages 

 of the corolla manifest, and more or less united with the base of the filaments. 



+■ Leaves either simple and entire, or with a pair or tvm of similar and smaller leaf- 

 lets or lobes : capsule ovate, acute. 



2. P. circinata, Jacq. f. A span to 2 feet high from a perennial or biennial 

 stout root, hispid, and the foliage strigose, either green, grayish, or canescent with a 

 softish pubescence : leaves varying from lanceolate to ovate, acute, obliquely and 

 simply straight-veined ; the lower tapering into a petiole and some of them more 

 commonly bearing one or two pairs of lateral leaflets : inflorescence hispid ; the 

 dense spikes thyreoid and crowded : corolla whitish or bluish, moderately 5-lobed, 

 longer than the linear or oblong-lanceolate calyx-lobes : filaments much exserted, 

 sparingly bearded. — Eclog. i. 135, t. 91 ; A. DC. Prodr. ix. 298. P. heterophylla, 

 Pursh. P. Califomica, Cham. 



