116 PEOCEEDINGS OF THE AMERICAN ACADEMY 



S23ecie?. In the middle of the i>land, only a few small plants among 

 bushes in the crevices of high rocks. It grows in compact bunches 

 with abundant yellow bloom ; May 1. 



43. Perityle incana, Gray, 1. c. 78 ; new species. Very common 

 in the middle of the island, in the crevices of high rocks, hanging in 

 massive bunches of yellow bloom; April, and through the summer. 



44. Perityle Emoryi, Torr. Scattered through some of the 

 canons on the east side; flowers white, showy, blooming abundantly 

 for three months, commencing in February. Much eaten by goats. 



45. B.ERiA Palmeri, Gray, Fl. Calif, ined. ; new species. Abun- 

 dant in warm low spots in the middle and at the south end ; flowers 

 showy, gamboge-yellow; February 27. 



— . Bahia I.ANATA, Nutt., var. A single plant had escaped the 

 goats, on a rocky open spot in the middle of the island ; flowers light 

 orange ; May 10. 



46. Amblyopappus pusillus, Hook. & Arn. In low ground at 

 the southern end. 



47. Matricaria discoidea, DC. Around springs in the middle 

 of the island. 



48. Artemisia Californica, Less. In considerable abundance 

 at the south end, in rocky spots, giving character to the vegetation ; 

 about a foot and a half high, of rather loose habit. Also in the mid- 

 dle of the island in crevices of the highest cliffs. 



49. Senecio Palmeri, Gray, Proc. Am. Acad. xi. 80 ; a new 

 species. " White sage;" very abundant on many warm slopes, from 

 the middle to the north end. About three feet high, of diffuse habit, 

 a very free and showy bloomer ; beginning to flower early in Febru- 

 ary and maturing in May, when the air is fllled with its downy seeds. 



— . Gnaphalium Sprengelii, Hook. & Arn. With the next. 



50. MiCROSERis lineartfolia. Gray. Only in the middle of the 

 island, on stony ridges; eaten close by goats. 



51. Malacotiirix Clkvelandii, Gray. Abundant among rocks 

 and trees in the middle of the island ; flowers deep yellow. 



52. SoNCiius OLERACEUS, Liuu. Very rare, on warm slopes in 

 the middle of the island. 



— . Specularia biflora. Gray. Rare, in the shade of rocks and 

 sage-brush on hillsides in the middle of the island. 



53. GiTiiOPSis specularioides, Nutt. Abundant at the niid<lle 

 and north end, under sage-brush and dead branches; flowers white, 

 turning to blue after gathering. 



54. Plantago Patagonica, Jacq. In level spots at the south end. 



