268 RHAMNACEiE. Ceanothus. 



colored pubescence ; leaves alternate, approximate or crowded, very thick and 

 coriaceous, roundish-obovate or cuneate-oval, often eniarginate, the younger 

 ones sometimes obscurely serrulate, glabious above, minutely tomentose-canes- 

 cent beneath ; mribels axillary, few-flowered, naked ; fruit with minute pro- 

 tuberances at the angles. 



" Low hills near the coast, St. Diego, California. — Leaves about half an 

 inch long, and 4-5 lines wide, similar to the preceding in texture, venation, 

 &c. Flowers white. Fruit the size of a large pea.'* Null. — Very near C. 

 cuneatus /?., and perhaps only another variety of that species ; from which 

 it differs, however, in its broader leaves and tuberculate stems, as well as in 

 the minute tubercles of the fruit. 



17. C rigidus (Nutt. ! mss.) : " young branches pubescent ; leaves oppo- 

 site and crowded, cuneate-obovate, mostly retuse, thick and coriaceous, mu- 

 cronately crenate-loothed, glabrous above, somewhat canescent beneath ; 

 umbels axillary and terminal, few-flowered, sessile; pedicels at length elonga- 

 ted ; ovary with 3 protuberances. 



" Bushy woods near Monterey, California. March. — A shrub about 6 feet 

 high, rigid, intricately branched, almost spinose. Leaves about half an inch 

 long, sometimes nearly obcordate ; teeth conspicuous ; the veins, &c. as in 

 the preceding. Clusters of flowers composed of several small crowded um- 

 bels ; the pedicels gradually elongating to the length of 3-4 lines. Calyx and 

 corolla bright blue." Nuttall. — Resembles the last two species in many 

 respects. 



18. C. dentatus : branches (and veins of the leaves beneath) tomentose 

 with rusty hairs; leaves much crowded and fascicled, coriaceous, oblong- 

 cuneiform, retuse, toothed, with revolute margins, more or less hairy on 

 both sides ; peduncles elongated, nearly terminal ; thyrsus oblong, of nu- 

 merous umbel-like fascicles ; ovary with three protuberances at the summit. 



California, Douglas ! — Leaves scarcely half an inch long, strongly and 

 remotely feather-veined, pitted beneath, irregularly and obtusely toothed. 

 Peduncles an inch or more in length. Flowers crowded, white. 



19. C. papillosus : branches tomentose ; leaves narrowly oblong, much 

 crowded, fascicled in the axils, densely and softly tomentose beneath, gland- 

 ularly denticulate on the margin ; peduncles aggregated ; clusters somewhat 

 capitate ; ovary triangular, the angles projecting at the summit. 



California, Douglas! — Branches terete. Leaves 1-1 i inch long (those 

 fascicled in the axils smaller), fringed on the margin with numerous capitate 

 glandular teeth ; the upper surface conspicuously papillose and somewhat 

 hairy. Peduncles numerous at the summit of the branches ; the flower-buds 

 at first invested with ovate woolly bracts: pedicels 2-3 lines long. Flowers 

 blue. 



Order XLVIII. LEGUMINOS^. Juss. 



Sepals united into a 5-cleft or 5-toothed calyx ; the segments often 

 unequal or variously combined, the odd one inferior. Petals 5 (some- 

 times by abortion fewer or wanting), perigynous or hypogynous, ir- 

 regular and unequal (papilionaceous), or sometimes regular, distinct or 

 variously cohering ; the odd petal superior. Stamens definite or in- 

 definite, inserted with the petals, distinct, or monadelphous, or diadel- 

 phous, or very rarely triadelphous : anthers versatile. Ovary simple, 



