440 DESCRIPTIONS OF NEW SPECIES 



and connected together in a circle, which is quickly deciduous in the mass. 

 — Perennial plants of Upper California, with erect, or low, decumbent, 

 spreading stems. Leaves entire, laciniated, or pinnatifid. Branches leafy, 

 one or two-flowered ; flowers large and white. Allied to Leptoseris, but with 

 a widely different aspect, and much more compound capitulum, &c. Also 

 to Andryala varia in the pappus, and in the presence of an outer, paleaceous, 

 minute crown ; but wholly distinct in habit, pubescence, colour of the flower 

 and achenium, which last, in Andryala, is cylindric and ten-ribbed; the 

 whole, however, form a very natural group, with its usual gradations of 

 form. — (The name is given in allusion to the remarkable colour of the 

 flowers. ) 



Leucoseris *saxatilis; stem leafy and decumbent; leaves oblong or linear- 

 oblong, amplexicaule and auriculate; the radical lanceolate, subserrate, beneath 

 hirsute; lower leaves now and then irregularly cleft, or somewhat pinnatifid 

 towards the base; flowers large and white. 



Hab. St. Barbara, on shelving rocks near the sea. Flowering in April. A large spreading 

 perennial, with terete, hollow stems, spreading out in a circle of one and a half to two feet. The 

 leaves are rather thick and somewhat succulent, two to three inches long, by about half an inch 

 wide; the young shoots pubescent. Flowers fastigiate, pure white, as large as those of the Dan- 

 delion. Florets one hundred, or more, in a capitulum, ligulate, fiat, deeply cleft at the summit, the 

 segments obtuse and glandular, the tube very hairy. Style and stigmas slenderly filiform, exserted, 

 nearly smooth : pedicel enlarging towards the base of the capitulum. Involucrum smooth, of many 

 equal, linear segments, in about two series ; caliculum somewhat squarrose, imbricated in two or 

 three series, the segments lanceolate, acuininate. Receptacle wide and convex, merely punctate. 

 Achenium dark brown, very short, obtuse at each end ; the pappus pure white and silky,, about 

 three times the length of the fruit, softly barbellated towards, and at the base, collected into a 

 single series of about thirty rays. 



Leucoseris * tenuifolia; suffruticose and smooth, erect and branching; leaves 

 sessile, laciniately pinnatifid, segments narrow, long and linear, upper ones 

 entire, filiform; capituli few, corymbose. 



Hab. St. Barbara, on the mountains near the town. The expanded flower and fruit I have not 

 seen, and I only place this plant here by its approximating habit. Two or three feet high, having 

 a considerable woody base. Involucrum and involucellum as in the preceding, but the segments 

 narrower and more acuminate. 



