DIVISION EIGHT — SCIENCE. ' 633 



CLAYTONIA Linn. 



C. PERFOLiATA Donn. (Indian lettuce.) Com. in shaded soil below 4,000 feet. 

 February — May. 



CALANDRINIA HBK. 



C. MENZiESii Hook. Com. below 2,000 feet. January — April. 

 PORTULACA Tourn. 



P. OLERACEA Linn. (Purslane.) Com. in cultivated and waste ground. June — 

 September. 



Ca ryophyllacecB . 

 SILENE Linn. Catchfly. 



S. ANTiRRHiNA Linn. Frequent below 2,000 feet. April — ^June. 



S. GALICA Linn. Common below 2,000 feet. 



S. i^ACiNiATA Cav. (Indian pink.) Abundant on dry hills below 3,000 feet. May 

 -July. 



S. PAi,MERi Wats. S, G. Mts. above 4,500 feet. June — July. 



S. PLATYOXA Wats. S. G. Mts. above 3,500 feet. June— July. 

 STELLARIA Linn. 



S. MEDIA Linn. (Chick weed.) Com. in shaded soil below 1,500 feet. 



S. NiTENS Nutt. O. K., A. S., Canyons of S. G. Mts. April— June. 

 CERA.STIUM Linn. Mou.se-ear. 



C. vulgaTum Linn. Com. in lawns and waste soil. 

 ARENARIA Linn. 



A. DOUGLASii (Fen.) T. & G. Frequent in dry soil below 2,000 feet. April — May. 

 SAGINA Linn. 



S. occiDENTALis Wats. Moist and shaded soil about Pasadena. April. 

 SPERGULA Linn. Corn-spurrey. 



S. ARVENSis Linn. Frequent along streets and in yards. March — May. 

 POLYCARPON Linn. 



P. DEPRESSUM Nutt. Altadena. April — June. 



Ceratophyllacece . 



CERATOPHYLLUM Linn. Hornwort. 



C. DEMERSUM Linn. In ponds at Oak Knoll. June — August. 



RanunculacecB. 



AQUILEGIA Linn. Columbine. 



A. TRUNCATA F. & M. Oak Knoll. May — August. 

 DELPHINIUM Tourn. Larkspur. 



D. CARDiNAi^E Hook. (Scarlet larkspur.) Dry hillsides below 3,000 feet. June — 

 August. 



D. DECORUM F. & M. Hillsides. May— July. 



D. PARRYi Gr. Foothills S. G Mts. April— June. 



D. VARiEGATUM T. & G. Hillsides. May— July. 

 P^ONIA Linn. Paeony. 



P. CALiFORNiCA Nutt. (California Pteony.) Com. in unbroken soil below 2,000 

 feet. March — May. 

 CLEMATIS Linn. Virgin's Bower. 



C. 1.1GUSTICIF01.IA Nutt. O. K., A. S., S. G. Mts. below 4,000 feet. 

 RANUNCULUS Linn. Buttercup. 



R. CALiFORNicus Benth. O. K., A. S. February — May. 



R. HEBECARPUS H. & A. Oak Knoll. March — May. 

 THALICTRUM Tourn. Meadow Rue. 



T. P01.YCARPUM Wats. O. K., A. S.. Canyons of S. G. Mts. May— July. 



LaurinecB. 



UMBELLULARIA Nutt. Mountain Laurel. Spice-tree. Bay-tree. 



U. CAi,iFORNiCA (H. & A.) Nutt. Canyons of S. G. Mts. February — April. 



44 



