DICOTYLEDONS. VA LERIANEiE. 245 



** Flowers yellow. 

 3. A. tomeJJtos(f, leaves bipinnatifid woolly, the segments crowfl- 

 ed linear acute, corymbs repeatedly compound, p. 248. — Hilli/ 

 pastures. 



Order XXXIII. DIPSACE.E. Jf/ss. 



Cal. adherent with the ovary, naked or calyculated. Cor, regu- 

 lar or irregular, 4 — 5-cleft. Anthers hee. Ovary \. Style 

 simple. S/''^//?a simple or trifid. P<?77Vflrp indehiscent, 1- 

 celled, 1 -seeded. Seed pendulous. Embryo straight, sur- 

 rounded by a thin albumen. 



Stems herbaceous. Leaves usually opposite, sometimes whorled. 

 Flowers generally capitate. Receptacle paleaceous. Mirb. 



1. DIPSACUS. 



Involucre many-leaved. Cal. double; ext. very minute ; int. 

 cup-shaped, entire. Cor. 4-lobed. Stam. 4. Receptacle 

 chaffy, spinous. Per/tarp angular, crowned with the double ca/. 



1. D. Fidlonum, leaves subconnate, scales of the receptacle 

 hooked at the extremity, involucres spreading (reflexed, Sm.). 

 p. A^. — Waste places, rare. 



2. D. syluestris, leaves opposite rarely connate, scales of the re- 

 ceptacle straight, involucres curved upward, p. 49. — IFaste 

 places. 



3. D. pilosvs, leaves petiolate with a small leaflet at the base on 

 each side, involucres short deflexed. p. 49. — Hedges. 



2. SCABIOSA. 



Involucre many -\ea.ved. Ca/. double, variously cut. Cor. 4 — 5- 

 lobed. Stam. 4-5. Receptacle chnffy or Wdked. Pericarp 

 crowned with the enlarged double cal., of which the ext. is 

 membranaceous ; the int. feathery or bristly. 



1. S. succisa, corollas 4-cleft, their segments equal, cauline leaves 

 subdentate, head of flowers nearly globose, p. 49. — Pastures. 



2. S. arvensis, corollas 4-cleft radiating, stem hispid branched, 

 stem-leaves pinnatifid (often) cut. p. 50. — Corn-Jields. 



3. S. columbaria, corollas 5-cleft radiating, stem hairy, radical 

 leaves oblongo-ovate and crenate or lyrate, those of the stem 

 pinnatifid with linear segments, p. 50. — Dry pastures. 



Order XXXIV. VALERIANE.E. Decand. 



Cc;l adherent with the ovary, sometimes pappose and rolled in- 

 wards, sometimes toothed and erect. Cor. tubular, o-lobcd^ 



