PEA FAJIILV 125 



14. T. suffocdtum (Suffocated Trefoil). — A small, slender, gla- 

 brous, prostrate plant, with its stem usually buried in sand ; 

 small white fio-iuers in ovoid heads, which are often confluent ; 

 calyx-tecfk lanceolate, longer than the corolla, recurved but not 

 spiny in fruit. — Sandy sea-shores ; rare. — Fl. June, July. Annual. 



15. T. strictum (Upright Round-headed Trefoil). — A small, 

 ascending, glabrous species ; leaflets linear-lanceolate, toothed ; 

 flowers small, rose-coloured, in stalked globose heads ; calyx-teeth 



subulate, spreading. — Rocks, Jersey and the Lizard, where it was 

 first found by the Rev. C. A. Johns in 1847 ; very rare. — Fl. June, 

 July. Annual. 



**** Heads inanyflencered, axillary : t^iroat of calyx 

 •flahroiis : pud r — 6-seeded 



16."'' T. hyhridiim (Alsike Clover). — A till, erect, branched, 

 glabrous plant ; petioles long ; stipules leafy, ovate-lanceolate ; 

 flozvers white or pale pink, becoming brown, in stalked, globose, 

 drooping heads ; calyx-teeth nearly etjual, subulate, erect. — A cul- 

 tivated plant, introduced from Alsike, near Tfpbala, Sweden. — Fl. 

 June — September. Perennial. 



17. T. ripens (White or Dutch Cloverj. — Stem creeping ; leaflets 

 often with a white band and a purplish spot near the middle ; 



flo'cers stalked, white, sometimes tinged with pink, fragrant, fading 

 to brown and bending downwards, in rouijdish heads ; pod 4- 

 seeded. — Abundant in meadows, where it fornjs excellent pasture. 

 In a variety commonly cultivated in gardens,- under the name of 

 Shamrock, nearly the whole of the centre of |;ach leaflet is tinged 

 with dark purple. The real Shamrock is probably this species or 

 any other " 3-leaved grass " : but some antiquarians contend that, 

 as Ireland was well wooded , in St. Patrick's tfme, it was probably 

 a leaf of the ^\'ood-Sorrcl (Oxalis Aceiosella) that the Saint selected 

 to illustrate the doctrine of the Trinity. On St. Patrick's Day 

 (]\Iarch 17th) the distinctive characters of the trefoils are scarcely 

 developed. — Fl. all through the summer. Perennial. 



18. T. fragiferiim (Strawberry-headed Trefoil) has the habit of 

 the preceding ; but the flou'ers are rose-colpured, and the large 

 globose heads of inflated calyces, enclosing the i — 2-seeded pods 

 and often tinged with pink, are not unlike the fruit from which the 

 plant is name'd. — Damp mcadow^s ; not very common. — Fl. July, 

 August. Perennial. 



19.* T. resupindtum, a similar species, but with i\\ox\&x peduncles, 

 smaller bracts, and reversed (resupinate) floicers, occurs as a 

 casual. — Fl. July. yVnnual. 



20. T. prociimbens (\loi:t Trefoil). — A small^, downy plant with 



