232 POI-YANDRIA MONOGYNIA. [cL. XIII. 



naturalized : flowers in July. Eng. Bot. vol. ix. pi. 610. Eng. Ft. 

 vol.iii. p. 17. 806. 



2. T. grandifolia. Broad-leaved Lime-tree. Flowers without nec- 

 taries ; leaves roundish, heart-shaped, pointed, serrated, downy, especially 

 beneath, with hairy tufts at the origin of the veins ; umbels three-flowered ; 



capsule turbinate, downy. Flowers in August : found in woods and 



hedges, but, like the other two species, probably not indigenous. Eng. 

 Fl. vol. iii. p. 18. 807. 



3. T. parvifolia. Small-leaved Lime-tree. Flowers without nectaries ; 

 leaves roundish, heart-shaped, serrated, pointed, glaucous beneath, with 

 hairy tufts at the origin of the veins, and scattered hairy blotches ; cap- 

 sule roundish, nearly smooth. A handsome tree, distinguished from 



the former by its much smaller leaves and flowers : germen densely 

 woolly : flowers in August : grows in woods in Essex, Sussex, &c. : 

 frequent. Eng. Bot. vol. xxiv. pi. 1705. Eng. Ft. vol. iii. p. 21. 808. 



8. HELIA'NTHEMUM. ROCK-ROSE. 



Calyx inferior, of five unequal, permanent leaves, the two outer- 

 most smaller. Petals five, much larger than the calyx, equal, 

 spreading, roundish. Filaments numerous, hair-like, shorter than 

 the corolla ; anthers small, oval. Germen superior, nearly globu- 

 lar. Style simple; stigma knobbed. Capsule angular, celled, 

 covered by the closed, permanent calyx. Seeds numerous, small, 

 angular. Name from nelios, the sun, and ant/ios, a flower. 265. 



* Stem woody ; no stipules. 



1. H. cdnnm. Hoary Dwarf Rock-rose. Stems decumbent ; leaves 



opposite, stalked, hoary beneath. Root woody ; stems branched at 



the base, each branch ascending and terminating in three or four corym- 

 bose flowers : leaves egg-shaped, acute, covered on both sides with close 

 hairs : calyx hairy : petals inversely egg-shaped, bright-yellow. Peren- 

 nial : flowers in May and June : grows on elevated rocks and in moun- 

 tainous pastures, in Wales and the north of England: rare. Eng. Bat. 

 vol. vi. pi. 396. Cistus marifolius. Eng. FL. vol. iii. p. 23. 809. 



** Stem herbaceous, without stipules. 



2. H. guttatum. Spotted Annual Rock-rose. Stem erect, herbaceous ; 

 stipules and bracteas none ; leaves opposite, lance-shaped, three-ribbed. 



Stem about six inches high, slightly branched : one or more simple, 



erect, terminal clusters: petals yellow, with a red spot at the base. 

 Annual : flowers in June and July : grows in sandy pastures, in Jersey 

 and Anglesea : very rare. Eng. Bot. vol. viii. pi. 544. Eng. Fl. vol. iii. 

 p. 24. 810. 



** Stem woody, with stipules. 



3. H. vulgare. Common Rock-rose. Stems shrubby, procumbent, 

 with fringed stipules ; leaves oblong, white, and downy beneath ; calyx 



smooth with bristly ribs, its outer leaves lance-shaped, fringed. Stems 



numerous, round, downy, simple, terminating in a cluster of flowers : 

 stipules lance-shaped, green on both sides, petals pale-yellow. A shrub : 

 flowers in July and August: grows in hilly pastures on gravelly soil. 

 Eng. Bot. vol. xix. pi. 1321. Eng. Fl. vol.iii. p. 26. The H. swrejanum, 



