§i The West American Scientist, 



Pale A glaucous, 2-5 feet high: leaves ARABIS HOLBOELII Horn, 

 twice pinnate, the larger a toot long or 

 more; the divisions cleft into a few nar- 

 row lobes: racemose panicle terminal, 1 

 -2 ft long: sepals caducous: corolla lin- 

 ear-oblong or clavate, bright rich lemon 

 y, over % inch long, base slightly cor- 

 date: capsuie oblong-ovate or narrower- 

 Lake county-j 

 DICENTRA OCHROLEUCA Engelm 



l fl wl.ite. 



ATHYSANUS PUSILLUS Ge. 



Genus CAULANTHUS W:itson. 



CAULANTHUS AMPLEXICAULIS Wat. 

 CAULANTHUS COULTERI Wat. 

 CAULANTHUS CRASSICAULIS Wat. 

 CAULANTHUS INFLATUS Wat. 

 CAULANTHUS PILOSUS Wat. 

 CAULANTHUS PROCERUS Wat, 

 CAULANTHUS GLANDULOSC S Hook. 



Genus TROPIBOCARPUM 



T. GRACILE Hook. 

 T. DUBIUM Dav. 



Hooker. 



CEXJCIEEKAE. 



Genus ALYSSl'M Tournefort. 



ALYSSUM MARITIMUM Lam. 



Lobulariamaritima Desv. 'sweet alyssurrr' 

 often cultivated for its fragrant fls., a native 

 of the Mediterranean region in Europe, now 

 widely naturalized in California. 



Genus DRAB A Linnaeus. 



.DRABA CORRUGATA Wat. 

 DRABA DOUGLASS!! G. 

 DRABA UN1LATERALIS Jones. 

 DRABA CUNEIFOLIA Nutt. 

 V. INTEGRIFOLIA Wat. 



Genus CARDASONE Linnaeus. 



CARDAMINE INTEGRIFOLIA Gray. 



LESQUERELLA PALMERI S. Watson. 

 "Pubescence dense, stellate-lepidote; 

 caudex simple, apparently biennial, the 

 simple stems 1° high or more: basal leaves 

 narrowly oblancenlate. repand, the cau- 

 line narrower and mostly entire: petals 

 spatulate, 3" long-: pods pubescent, 

 ovate-globose to broadly ellipsoidal, erect 

 on long spreading or ascending pedicels; 

 style as long as the pod; cells 2-4-ovuied. 

 Arizona. (Palmer, 1872) ; Lower California 

 (C. R. Orcutt, 1884)."— S. Watson, Proc. 

 Am. Acad., xxiii. 255 (May 29, 1888). 



Genus ARABIS Linnaeus. 



ARABIS ARCUATA G. 



V. LONG I PES Wat. 



ARABIS BECK WITH II Wat. 



ARABIS F1LIFOLIA Ge. 



ARABIS LUDOVICTANA C. A. Meyer. 



ARABIS PARISHII Wat. 



ARABIS PERENNANS Wat. 



ARABIS PERFOLIATA Lam. 



ARABIS PLATYSPERMA G. 



ARABIS PULCHRA Jones. 



ARABIS REPANDA Wat. 



Genus THELYPODIUM Endl. 

 T. INTEGRIFOLIUM Endl. 

 T. LASIOCARPUM Greene. 

 V. inalieoum Robinson. 

 T. STENOPETALUM. Watson. 

 T. VV r RIGHTII Gray. 



Genus NASTURTIUM R. Brown. 



N. CURVISILIQUA Nuttall, 



V. laevis Watson 



V lyratum Watson 



V. filipes G. 



N. OFFICINALE R. Br. 



N.OBTUSUM Nuttall 



V. sphaerocarpum Watson 



Genus LEPIDIUM Linnaeus,. 



L. BIPINNATIFIDUM Desv. 



L. DIcHTYOTUM Gray 



V. acutidens Gray. 



L FLAVUM Torrey 



L. FREMONTH Watson. 



L. LASIOCARPUM Nuttall 



V. tenuipes Watson 



L. INTERMEDIUM Gray 



L. LAP IPES Hook. 



L. MEDIUM Greene ' 



L. NITIDUM Nuttall 



DENTARIA CALIFORNICA Nu(t. 

 DITITYR kEA WISLIZENI E. 



Genus CHEIRANTHUS Linnaeus. 



CHEIRANTHUS ASPER C. & S. 



Genus BARBAREA R. Brown. 



BARBAREA VULGARIS R. Br. 

 V. ARCUATA Fries. 

 V. GLABRIOR Rob. 



BISCUTELLA CALIFORNICA B. & H. 

 Is Dithynea wislizeni E 



Genus CAPSELLA Moencli. 



CAPSELLA DIVAR1CATA Walp. 

 CAPSELLA KURSA-PASTORIS Medic. 

 CAPSELLA ELL1PTICA C. A. Meyer. 



