CL, XVII,] DIADELPHIA DECANDRIA. 299 



* * * * Legumes one-seeded. Calyx of the fruit infected. 



15. T. fragiferum. Strawberry-headed Trefoil. Heads roundish 

 upon long stalks ; calyx at length, inflated, membranous, two of 



its teeth reflected : stems creeping. Stems prostrate, creeping, 



smooth : leaflets inversely heart-shaped, serrate : flowers rose- 

 coloured : calyces finally red, the head in this state resembling a 

 strawberry. Perennial : flowers in July and August : grows in 

 meadows and pastures : not common. Eng. Bot. vol. xv.pl. 1050. 

 Eng. Fl. vol. iii, p. 388. 1082. 



16. T, resupindtum. Reversed Trefoil. Heads roundish, on short 

 stalks ; calyx at length membranous, inflated, acute, hairy, two of 

 its teeth longer and spreading ; corolla reversed. Stems pro- 

 cumbent : leaflets inversely egg-shaped. Annual : flowers in July : 

 found in meadows near Bristol, and Poole, Dorsetshire, but is not 

 truly wild. Eng. Bot. Suppl. pi. 2789. Brit. Fl. 4th ed. p. 277. 1083. 



***** Legumes one-seeded. Standards finally deflected, 

 dry and membranous, 



17. T, procumbens. Hop Trefoil Heads oval, many-flowered ; 

 standard finally deflected, furrowed; stems spreading or procum- 

 bent ; common leaf- stalk longer than the middle partial leaf-stalk. 



Stems very numerous, spreading all round, from four inches 



to a foot long : heads of about fifty bright-yellow flowers. Annual : 

 flowers in June and July : grows in dry pastures : common. Eng. 

 Bot. vol. xiv. pi. 945. Eng, Fl. vol. iii. p. 309. 1084. 



18. T.filiforme. Slender Yellow Trefoil. Clusters loose, few- 

 flowered; common flower -stalks thread-like, waved; standard 

 even ; stems prostrate ; common leaf-stalk shorter than the nearly 



sessile middle leaflet. Stems thread-like, from four to ten 



inches long : flowers yellow, three or four only in each cluster. 

 Annual : flowers in June and July : grows in dry pastures : com- 

 mon. Eng.Bot. vol.xviiL pi. 1257, Eng. Fl. vol. iii. p. 311. The T. 

 minus, Lesser Yellow Trefoil, is a large variety of this plant, with 

 heads of many flowers and leaf-stalks longer than the leaves, Eng. 

 Bot.vol. xviii.pl. 1256. Eng. FL vol. iii. p. 310. 1085. 



18. LOTUS. BIRD'S-FOOT TREFOIL. 



Calyx inferior, tubular, permanent, with five acute, nearly 

 equal teeth. Corolla of five petals, deciduous ; standard in- 

 versely egg-shaped, ascending with a vaulted claw ; wings ob- 

 long, obtuse, approaching each other, shorter than the stand- 

 ard ; keel prominent beneath, closed above, of two united petals, 

 with an ascending point, and short separated claws. Filaments 

 ten, nine united into a compressed tube, split above, the other 

 hair-like, separate, all generally dilated under the anthers ; 

 anthers small, roundish. Germen cylindrical. Styles thread- 

 shaped, ascending at a right angle ; stigma simple. Legume 

 cylindrical, straight, much longer than the calyx, two-valved, 

 one-celled, the seeds separated by a spongy substance. Seeds 

 globular. Name, lotos, of the Greeks. 363. 



1. L. cornicuUtus. Common Bird's-foot Trefoil. Heads few- 

 nowered, depressed ; stems procumbent ; legumes spreading, 

 nearly cylindrical ; claw of the standard broad ; filaments all di- 

 lated under the anthers. Stems several, spreading all round, 



