TETRANJ). MONOr.. 49 



seeded. (Flowers 2, on a spadix arising from the sheathing 

 bases of the leaves, which perform the office of a spat ha*} 

 (Cerastium tetrandrum, DECANDR. PENTAG.) 



1. MONOGYNIA. 



1. DIPSACUS. 



1. D. Fnllonum (Fuller's Teasel}, leaves subconnate, scales 

 of the receptacle hooked at the extremity, involucres spreading 

 (reflexed, Sm.). Lightf. p. 1 13. E.'lB. t. 2060. 



HAB. Rude uncultivated places, as at Lord Elgin's lime-works, near 

 Dunfermling, &c., Lightf. Fields near Cathcart and Langside, 

 Glasgow, Hopk. FL July, Aug. j . 



Stem 4 5 feet high, very angular, and prickly. Leaves large, oblong 

 or oblongo-lanceolate, obtusely and irregularly serrated, sometimes, 

 especially the upper ones, connate. Involucre spreading, about 

 as long as the head of flowers. FLoicers in oval heads, pale purple 

 or whitish. Used in dressing cloth, for which purpose the hooked 

 scales of the receptacle are admirably calculated. 



2. D. sylvestris (wild Teasel), leaves opposite rarely connate, 

 scales of the receptacle straight, involucres curved upward. 

 E.B. t. 1032. 



HAB. Inch Colm, near Edinb., Maugh. Fl. July. <$ . 



The more slender habit, the leaves not or scarcely ever connate, in- 

 volucre not spreading, and the scales of the receptacle being straight, 

 are the principal marks which serve to distinguish this from the pre- 

 ceding. 



3. D. pilnsus (small Teasel] , leaves petiolate with a small leaflet 

 at the base on each side, involucres short deflexed. Lightf. 

 p. 113. E. B. t. 877. 



HAB. Moist hedges, but not common, Lightf. Fl. Aug. Sept. $ . 



Stem slender, 2 4 feet high, angular, rough with short inflexed 

 prickles, longer, and resembling bristles, on the peduncles. Leaves 

 ovato-acuminate, serrated, eared at the base. Heads ofjlowers 

 smallish, round, hairy. Scales straight, blossoms white. Anthers 

 white, much protruded. 



2. SCABIOSA. 



1. S. succisa (DeviVs-lit Scabious), corollas 4 -cleft their seg- 

 ments equal, cauline leaves subdentate, heads of flowers nearly 

 globose. Lightf. p. 114. E. B. t. 878. 



HAB. Meadows and pastures, common. Fl. July, Aug. I/ . 



Root as it were cut off abruptly, or bitten (radix pramorsa). Stems 

 nearly simple. Leaves hairy, rather stiff; radical ones ovate, mostly 

 petiolate ; those of the stem oblong. Flowers purplish blue. 



2. S. arvensis (Field Scabious), corollas 4 -cleft radiating, stem 

 hispid branched, stem-leaves pinnatifid (often) cut. Lightf. 

 p. 114. E. B. t. 659. 



