CL. IX. X.] ENNEAXDHIA DECAXDKIA. 191 



having rose-coloured petals. Annual : flowers in July and Au- 

 gust : grows in watery places in England : rare. Near Callander, 

 Scotland. E. tripetala of Eng. Fl. vol. ii. p. 243. Eng. Bot. vol. xiv. 

 pi. 955. 623. 



2. E. Hydropiper. Small Octandrous Water-wort. Leaves oppo- 

 site, spatliulate ; flowers octandrous, with four petals ; capsule 



four-celled. Annual: flowers in August : grows at Llyn Co- 



ron, in Anglesea, where it was discovered by Mr. J. E. Bowman 

 in 1830. Hooker. Eng. Bot. Suppl. pi. 2670. Brit. Fl. 4th ed. p. 

 166. 624. 



CLASS IX. ENNEANDRIA. 

 Plants bearing Flowers with Nine Stamens. 



Order I. HEXAGYNIA. Six Pistils. 



1. BIPTOMUS. Calyx none. Petals six. Capsule six, many- 

 seeded. 



ENNEANDRIA HEXAGYNIA. 



1. BU'TOMUS. FLOWERING RUSH. 



Calyx none. Petals six, egg-shaped, withering, the three 

 outer smaller and more acute. Filaments awl-shaped, shorter 

 than the corolla, six in the outer row, three in the inner ; an- 

 thers oblong, two-celled, two-valved. Germens six, oblong, 

 tapering, ending each in a style 5 stigmas simple. Capsules 

 six, oblong, tapering, one-celled, one-valved. Seeds numerous, 

 oblong. Named from bous, an ox, and temno, to cut. 220. 



1. B. unibelldtus. Common Flowering Rush. Root tuberous* 

 Leaves erect, narrow, acute, all radical. Scape longer than the 

 leaves, round, smooth, terminating in an umbel of beautiful rose- 

 coloured flowers. Perennial : flowers in June and July : grows 

 in ditches, pools, slow rivers, and lakes, in England and Ireland. 

 Eng. Bot. vol. x. pi. 651. Eng. Fl. vol. ii. p. 245. 625. 



CLASS X. DECANDRIA. 



Plants bearing Flowers with Ten Stamens. 



Order I. MONOGYNIA. One Pistil. 



* Floicers with more than one petal. 

 1. MONO'TROPA. Petals varying in number, bulging at the 



base. Anthers one-celled, two-valved. 

 4. PY'ROLA. Petals five. Anthers two-celled, opening with two 



pores. 



