392 CALIFORNIA ACADEMY OF SCIENCES. 



have arrived there Avith seed of grain or otlier cultivated 

 phmts, from southern Europe. 



31. SiLENE LACINIATA, Cav. Ic. vi. 44?— Phiiit glabrous, 

 the leaves all very narrow: stems numerous, slender, de- 

 cumbent, from a thick, perpendicular fusiform root. Fre- 

 quent on northward slopes. 



32. Stellaria media, Smith, Eng. Bot. t. 537. 



33. Stellari\ nitens, Nutt.; Torr. & Gray, Fj. i. 185. 



34. Sagina occidentalis, Watson, Proc. Am. Acad. x. 

 345. 



35. Lepigonum maceothecum, Fisch. & Mey. Kindb. 

 Monog. Lep. 16. — A very robust and viscid perennial, with 

 large fleshy roots : not rare, on the north side, near the sea, 

 among rocks. 



36. Pentac^na kamosissima. Hook. Bot. Misc. iii. 338. — 

 Low bluffs near the sea, toward the west end. 



37. Calandrinia Menztesii, Hook. Fl. Bor. Am. i. 223. 



38. Claytonia perfoliata, Donn, Bot. Mag. t. 1336. 



39. Malva parviflora, Linn. Amoen. iii, 416. — Less 

 common than on the mainland, where it is called if. horealis; 

 but it is a most distinct species. 



40. Malvastrum Thurberi, Gray. var. laxiflorum, Gray. 

 Proc. Am. Acad. xxii. 291. — Rare; only two bushes seen, 

 and these under the protection of large opuntias; perhaps 

 thus kept from the sheep. 



41. Erodium cicutarum, THer.; Ait. Hort. Kew. Ed. 1, 

 ii. 414. 



42. Erodium mosohatum, Willd. Sp PL iii. 631. 



43. Rhamnus insularis, Kellogg., Proc. Cal. Acad. ii. 

 37 ?— Tree often 20 feet high, the naked trunks 4 — 5 inches 



