1S4S.] 9 



T. ^demidatum. Q. Smooth, stem erect, a little branched, lower leaves on 

 very long petioles; leaflets obcovdate or oboval, minutely and sharply serrulate ; 

 stipules membranaceous, entire and setaceously acuminated; capituli axillary 

 and terminal, rounded, many-flowered, without an involucrum, but with a cica- 

 trised circle in its place, the flowers attached to a conic torus of the same struc- 

 ture ; segments of the calyx subequal, linear lanceolate, sharply acuminated, 

 nearly the length of the small ochroleucous flower; pod stipitate, about 

 2-seeded. 



H-vB. With the above, which it much resembles, but the vexillum is not 

 unusually inflated. 



About a span high ; a rather small annual, and very smooth in every part. 

 Leaflets about three-quarters of an inch long, three to four lines wide. Flowers 

 small, with the teeth of the calyx very long and conspicuous. 



T. ^diversifolum. Q. Small and smooth, branching from the base; leaflets 

 linear or oblong, obtuse, perfectly entire, or repandly and rather sharply serru- 

 late towards the apex; stipules nearly entire, with subulate points; peduncles 

 longer than the leaves ; heads very small, 8 to 10-flowered; involucrum 6 to 

 8-parted, the divisions entire, ovate, obtuse ; calyx nearly half the length of the 

 short flowers, the teeth simple and acute ; legume 2-seeded. 



Hab. Near St. Simeon, Upper California. Remarkable for the diversity of 

 its foliage, some of the leaflets being linear and quite entire, others with the 

 same slightly serrulate ; in other plants they are cuneate-oblong, and even 

 emarginate. The plant about a span high, with reddish flowers and a deep 

 purple tipped carina. 



ASTRAGALUS. 



fi. MicROLOBTUM. Annual or perennial? Flowers various. Legume small, 

 scarcely exserted beyond the calyx, 1-seeded. 



K. *Catal!.nensis. Q. Nearly erect and much branched ; stipules ovate, dis- 

 tinct, leaflets linear, deeply emarginate, five to seven pair, as well as the stem, 

 scattered with appressed hairs ; flowers ochroleucous, in capitate heads ; seg- 

 ments of the calyx subulate, obtuse, thickly clad with rough white and black 

 hairs, the segments all inclined to the lower side ; legume scarcely exserted, 

 scabrous. 



Hab. On the island of Catalina, in Upper California. Flowering in Feb- 

 ruary. 



A. *nigrescens. Annual; nearly erect and much branched; stipules 

 ovate, acuminate; leaflets cuneate-linear, deeply emarginate, nearly smooth; 

 flowers ochroleucous, in short oval spikes, at length nodding; segments of the 

 calyx subulate, acute, clothed with shortish black hair; legume ovate, acute, and 

 villous, a little exserted ; cells 1-seeded. 



Hab. With the above, which it greatly resembles, but difl^erent in the 

 calyx and pod; flowers less crowded and pedicellate, the calyx not so deeply 

 divided, nor clothed with such long rough hairs ; bractes minute, chaffy, subulate; 

 stipules partly united at the base. 



PHLOX. 



P. *brijoides. Densely crespitose, very small ; leaves closely imbricated in 4 

 rows, the ciliar pubescence extending beyond the points of the oblong-lanceo- 



2 



