PRIMULACE^. 77 



6. ANAGALIilS, Toumefort. 

 1. A. arvensis, L. Square stems: leaves ovate: corolla often salmon -purple. 



7. CENTUNCULUS, DiUenius. 

 1, C. minixuus, L. Slender: corolla lobes acute, shorter than calyx. 



8. SAMOLUS, Tournefort. 

 1. S. Valerandi, L^ yar. Americanus, Gr. Corolla white, a line long or less. 



STYRACACE^. 



1. STYB.AX, Tournefort. 

 1. S. Calif omica, Torr. Shrub: spatulate corolla lobes, 8 or 9 lines long, white. 



OLEACEJE. 



1. FBAXINXJS, Tournefort. 



1. F. dipetala^ H. &, A. Leaflets serrate: petals 2, white, 2 lines long. 



2. F. Oregana, Nutt. Leaflets mostly entire: flowers dioecious, apetalous. 



APOCYNACEJ]. 



Flowers in terminal cymes: corolla campanulate, white or pinkish 1 



Flowers on scape-like peduncles: corolla short: funnelform, rose-purple 2 



1. APOCYNTJM, Toumefort. 



1. A. androsaemifolium, L. Spreading: leaves ovate: corolla 3 or 4 lines long. 



2. A. cannabinum, L. More strict: leaves narrower, nearly sessile: corolla smaller. 



2. CYCIiADENIA, Bentham. 



1, C. humilis, Benth. Smooth, low: corolla 9 lines long, throat hairy: style long. 

 Var. tomentosa, Gr. Densely hairy: leaves- 2 or 3 pairs, 1 to 3 inches long. 



asclepiadacej:. 



Stem twining: anthers with scale-like appendages: corolla rotate ,-, 



Stem erect: anthers with hooded or oup-like appendages: petals reflexed. 



