Dipsaceae. 79 



ORDER 39. — Dipsaceae. 



Calyx gamosepalous superior pappus-like surrounded by a scarious invo- 

 lucel. Corolla gamopetalous epigynous tubular, limb oblique ^ or 5-lobed. 

 Stamens 4 epipetalous, filaments distinct, anthers versatile. Ovary i -celled. 

 Style filiform. Stigma simple, flowers in a dense head siurrounded by a many- 

 leaved involucre. 



Calyx-limb entire, Dipsacus I. 



Calyx-limb of separate bristles, 329 



329 Receptacle scaly, Scabiosa II. 



329 Receptacle hairy, ....... Kiiautia III. 



\,— DIPSACUS, 



Involucral bracts many rigid spreading, tloral bracts exserted spinescent, 

 calyx -limb cup-shaped 4-lobed, receptacle vv^ith spinous scales. 



DIP'SACUS SYLVES'TRIS (72). Wild Teasel. 8—9. Stem erect 

 (720) stout, 4—5 ft., prickly, leaves sessile entire obovate-lanceolate, flov^^ers 



purple, in ovoid or cylindrical heads 2 — 3 in. diameter, bracts 8 — 12 



linear rigid longer than the head. Waste places. 



Dip'sacus pilo'sus (51). Small Teasel. 7 — 9. Stem 2 — 4 ft. slender 

 {721) scarcely prickly, leaves oblong usually with a pair of leaflets on the 

 base, flowers white on globular heads \— i in. diameter, brads many 

 shorter than the head deflexed. [T. Tb. C. CI. 



\\.— SCABIOSA. 

 Receptacle scaly, calyx-limb of 4 — 5 bristles, stamens 4 exserted. 



SCABIO'SA SUCCrSA (112). Devil's-bit Scabious. 7—10. Corolla 



(722) 4-cleft purplish blue, radical leaves ovate, cauline leaves oblong, root 

 abruptly cut off. Pastures. 



SCABIO'SA COLUMBA'RIA (71). Small Scabious. 7—8. Corolla 



(723) 5-lobed lilac, leaves variable, radical leaves usually pinnate, cauline 

 leaves pinnatifid. Dry pastures a?td banks. 



lU.—KNAUTIA. 



KNAU'TIA ARVEN'SIS (95). Field Scabious. 6—8. Receptacle hairy 



(724) without scales, calyx-limb cup-shnped with 8 — 16 radiating teeth, radical 

 leaves lanceolate slightly serrate hairy, cauline leaves toothed lobed or 

 pinnatifid, corollas 4-lobed lilac, outer ones much larger two-lipped 

 River-banks and fields. n 



