PEA FAIIILV 123 



small, nearly enclosed in the calyx, indehiscent, i — 4-seeded. 

 (Name from the Latin //•/, three, a.nA folu/ni, a leaf.) 



* Heads few-fowered, axilla ly : ihroat-of calyx naked 



1. T. siil'tei-rdneiim (Subterranean Clover). — A curiou.s little 

 plant, with prostrate, branched, hairy stems : and small axillary 

 heads of ^'\Y\i&Jloii'e?-s, 3 — 5 together, with numerous 5-toothed 

 abortive calvees which cover 'Cao. pods, as the head bends abruptly 

 downwards after flowering, burying itself in the ground. — Dry 

 sandy places ; uncommon, — Fl, May, June. Annual. 



** Heads viany-floivered, terminal : throat of calyx with a 

 ring of hairs : pod \-seede(i 



t Heads ovoid or globose^ 



2. T. pratens'e (Red Clover). — Leaflets -broad, notched or 

 entire; stipules broad, terminating abruptly in a long bristle; 



flo'ivers red, or sometimes white, in terniinal, sessile, dense 

 roundish-oblong heads : calyx hairy, its bristle-like teeth half as 

 long as the corolla. — The common clover o:f meadows, where it 

 forms a valuable part of the hay crop. There are also improved 

 cultivated varieties. The corolla tubes abound in honey, on 

 which account children often call them Honeysuckles. The 

 flowers are very sweetly-scented. — Fl. all the summer. Perennial. 



3. T. medium (Zigzag Clover). — Not unlike the last, but dis- 

 tinguished by its more slender, erect, zigzag habit; narrower, 

 elliptical, slightly hairy leaflets ; lanceolate, ijot abrupt, stipules; 

 and loose, stalked, round heads of floivers.^Y)-!^ pastures and 

 bushy places; common. It thrives better, than T.pj-atense in 

 dry soils. — Fl. June — September. Perennial, 



4. T. ochrolei'icon (Sulphur-coloured Trefoil). — Erect, 6 — 18 in. 

 high, downy ; lower leaves on very long stalks ; flowers cream- 

 coloured, turning brown as they fade, in terminal, stalked, dense 

 heads, which are at first globose, afterwards ovate. — Dry pastures 

 in the eastern counties ; rare. — Fl. June — August. Perennial. 



5. T. squamosum (Teazle-headed Trefoil). — Stem spreading, 

 usually procumbent ; stipules awl-shaped, very long ; floicejs 

 small, pink, in terminal, stalked, roundisli head : calyx-teeth 

 awl-shaped, ciliate, shorter than the corolla, finally becoming 

 enlarged, broad and spreading. — Salt marshes in the south of 

 England. — PI. June, Jujj'. Annual. 



ft Heads cylind''ic^9^»^ug or after flo7i<ering 

 6* T. incarndtum (Crimson Clover).— Erect, downy, with 

 spreading hairs ; leaflets obovate ; stipules ovate, blunt ; flowers 



