182 OCTANDRIA MONOGYN1A. [CL. Till. 



Order III. TRIGYNIA. Three Pistils. 



10. POLY'GONUM. Calyx divided into five deep segments, 



coloured, inferior. Corolla none. Seed one, naked. 



Order IV. TETRAGYNIA. Four Pistils. 



12. ADO'XA. Calyx half- inferior. Corolla divided into four or 



five segments. Berry four or five-celled. 



11. PA'RIS. Calyx four-leaved. Petals four, awl- shaped. Berry 



four- celled. 



13. ELA'TINE. Calyx four-leaved. Petals four. Capsule supe- 

 rior, four-celled. 



(Sagina. Rhodiola.) 



OCTANDRIA. MONOGYNIA. 

 1. (ENOTHE'RA. EVENING PRIMROSE. 



Calyx superior, of one leaf, deciduous ; tube cylindrical, limb 

 deeply divided into four oblong segments. Petals four, inversely 

 heart-shaped, attached to the summit of the tube of the calyx, 

 and as long as the limb. Filaments awl-shaped, incurved, 

 shorter than the petals ; anthers oblong. Germeu inferior, ob- 

 long, furrowed. Stigma divided into four obtuse, spreading 

 segments. Capsule oblong, bluntly quadrangular, four-celled, 

 four-valved. Seeds numerous, angular, beardless. Name from 

 oinos, wine, and thera, catching, the root having the odour of 

 wine. 207. 



1. (E. bierinis. Common Evening Primrose. Leaves between 

 egg-shaped and lance-shaped, flat ; stem rough, somewhat hairy ; 



petals undivided. Stem two or three feet high, leafy, angular : 



leaves alternate, acute, toothed, downy : flowers numerous, bright- 

 yellow, in terminal spikes. Biennial : flowers in July, August, 

 and September : grows on sand-banks, on the west coast of 

 England ; also in corn-fields : an American species naturalized. 

 Eng. Bot. vol.xxi. pi. 1534. Eng.Fl vol. ii. p. 211. 579. 



2. EPILO'BIUM. WILLOW-HERB. 



Calyx superior, of one leaf, deeply divided into four oblong, 

 coloured, deciduous segments. Petals four, circular, broadest at 

 the outer part, notched, inserted between the segments of the 

 calyx. Filaments awl-shaped, four alternate ones shorter ; an- 

 thers oval, compressed, obtuse. Germen inferior, cylindrical, 

 very long. Style thread-shaped ; stigma thick, blunt, gene- 

 rally four- cleft. Capsule quadrangular, very long, four-celled, 

 four-valved ; partitions opposite the valves. Seeds numerous, 

 oblong, small, crowned with down. Named from tpi, upon, 

 and lobos, a pod. 208. 



* Flowers irregular. 



1. E. angustifolium. Rose-bay Willoio-herb. Leaves scattered, 

 between linear and lance-shaped, veined, smooth ; petals unequal ; 



