PLANTS COLLECTED BY DR. GAMBEL. 167 



An annual, about ten to twelve or fourteen inches higb, with a few narrow 

 spathulate leaves, greenish, but pubescent above, whitish and tomentose beneath. 

 Clusters of flowers crowded ; Ihe perianth apparently rose colour, much exserted, 

 with the segments oblong. 



Hab. Santa Barbara, Upper California, ^'lowering in April. 



C. *ANGusTiFOLiA. Annual and small : leaves all linear-spathulate, softly lanuginous, as well as the 

 branches ; stem trichotomous, the heads of flowers somewhat racemose ; involucrum pilose, with very 

 unequal, uncinate spreading teeth, subulate to their base ; perianth minute, the segments obtuse and 

 without points. 



A small, slender annual, three to five inches high, covered with whitish, long, 

 woolly hairs. Leaves not more than a line broad, radical, one to two inches long, 

 with very slender petioles. Stem leafy to the summit, bi- or trichotomous, the heads 

 of flowers disposed in a sort of cymose raceme. Teeth of the involucrum brownish- 

 yellow, very unequal and strongly hooked, wholly subulate, without any membranous 

 expansion, the teeth twice the length of the cup of the involucrum. Perianth sessile, 

 with oblong, obtuse segments, which are not mucronulate. 



Hab. Pueblo los Angeles, Upper California. Flowering in April. 



C. *DiscoLOR. Annual or biennial, and rather dwarf; leaves all radical in a rosulate cluster, the primary 

 nearly smooth, rather large, spathulate-oblong, obtuse or emarginate, rather smooth above, whitely 

 tomentose beneath ; the petioles, stem and involucrum very hairy ; the involucruni with spreading, 

 very unequal teeth subulate to their base ; scape low, doubly trichotomous, the flowers in cymose 

 clusters. 



A smallish species, three to five inches high. Leaves with their longish petioles 

 two to two and a half inches long, about half an inch wide. The involucrum with 

 the teeth slightly uncinate, two of them very small. 



Hab. St, Diego, Upper California. 



C. *PRocuMBENS. Annual or biennial, softly pilose ; leaves spathulate, rather small ; stem nearly naked, 

 procumbent, the branches extremely divaricate and fragile, cymose ; flowers in small 'clusters ; 

 involucrnm with the teeth subulate to the base, slightly uncinate, unequal ; perianth segments oblong, 

 entire, (yellow,) pubescent. 



A very remarkable species by its procumbent habit and extreme fragility ; the 

 branchlets and clusters of flowers disjointing into numerous fragments on the 

 slightest touch, like a Loranthus. 



Hab. With the above. Flowering in April and May. (Nuttall.) 



C. *UNCINATA. Like the preceding, but with the teeth of the involucrum strongly and remarkably 

 uncinate and nearly equal ; the tube is almost smooth and strongly ribbed ; it is likewise yellowish, as 

 well as the pubescent perianth. 



Hab. With the above. (Nuttall.) 



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