52 ENGLISH BOTANY. 
leaves have extremely long petioles in proportion to the size of the 
leaflets. 
Dense-flowered Trefoil. 
French, 7réfle Ltouffe. 
We have found this curious plant on the sandy sea-coast on our eastern shores, 
buried in sand so completely that even its seeds are perfected subterraneously and _ 
without light. On putting down a knife or a stick, the whole plant may be raised, and 
then its flowers and fruit come into view. . 
SPECIES XIV—TRIFOLIUM STRICTUM. Waldst. & Kit. 
Prate COCLX. 
T. levigatum, Desf: Fl. Atl. Vol. II. p. 195. Gr. & Godr. Fl. de Fr. Vol. I. p. 416. 
Rootstock none. Stems few, erect or ascending, simple and 
straight, or slightly branched and flexuous. Lower leaves on 
rather long stalks, with obovate leaflets rounded at the apex ; 
upper leaves shortly stalked, with elliptical-strapshaped sub-acute 
leaflets ; all with the margins denticulate; veins prominent, the 
lateral ones straight. Stipules adnate for about half or two-thirds 
of their length, ovate, acute, with denticulate margins. Flower- 
heads terminal and axillary, on stalks exceeding their own length 
and about as long as the leaves from which they spring, solitary, 
ovoid-globular. Flowers sub-sessile, not reflexed in fruit. Calyx- 
tube bell-shaped, 10-ribbed, glabrous, open at the throat, swollen in 
fruit; teeth triangular, acuminate, sub-spinescent, the four upper 
about equal to the tube, the lower one exceeding it. At length 
spreading-recurved. Corolla a little longer than the calyx, shri- 
velling or deciduous. Pod 2-seeded, a little longer than the calyx- 
tube. Plant glabrous. | 
On dry banks. Veryrare. It has only occurred at Llandewed- 
nach, on old Lizard Head, Cornwall. It has also been reported 
from Anglesea, by Dr. Dickenson, who found it ‘on a wild, un- 
cultivated heath, about three miles north of Aberffraw, Anglesea, 
nearly in the centre of the island, in abundance, covering a space 
of 50 yards square, and to all appearance undoubtedly indigenous.” 
—(Bot. Gazette, Vol. I. p. 28.) It also occurs in the Channel 
Islands. - 
England.. Annual. Early Summer. 
Stems 1 to 6 inches high in the Cornwall and Channel Islands 
specimens, but sometimes 1 foot high or even more in Continental 
ones. Leaflets of the upper leaves $ to 1 inch long, much narrower 
