£4© HEXANDRIA. TETRAGYNIA. 



spreading", pale rose colour, undulated, obtuse, a little 

 longer and nearly twice the breadth of the calix. Germ 

 with a distinct solitary style, as in no other species of tlie 

 genus, and 3 smoothish stigmas somewhat shorter than 

 the style. 



A North American genus, with the exception of T". oho- 

 vahim, which grows also in Kamtschaika according to 

 Pallas. 



553. RUMEX. L. (Dock.) 



Calix 6- parted, persistent, the 3 interior di- 

 visions petaioid, connivent. Seed 1, 3-sided, su- 

 perior, naked. Stigmata multifid. 



Flowers paniculate, terminal or axillary-, mostly fascicu- 

 lated; in many species the petaioid segments are exter- 

 nally glt'.nduliferous. Some of the species are monoicous 

 or dioicous. 



Species. l.R. sa7ig7Hneus. 2. crispns. o- verticilhtUis. 

 4. britannicns. 5. persfcurioicles. 6. crlsjiatitlus. 7- obtJtsi' 

 foliiis. 8 aqvaticiis. 9. digynns, (Sorrel). 10. Aceto^ella 

 (Sheep's sorrel). Introduced; abundantly naturalized. 

 11. veiiosus. Ph. Flowers Hermaphrodite, valves very 

 large, reniform-cordate, entire and widiout gbnds, red; 

 leaves subovul-lanceolate, small. Hab. Near the conflu- 

 ence of tlie river [Maite, on the sandy banks of theMis- 

 souri. Flowering in April. Stem scarcely a loot high. 

 Flowers pendulous and fasciculated, valves ubout 5 lines 

 wide. It differs sufficiently from Ji. vcsicamts by having 

 tlie petaioid valves only large; it is also perennial. 



Tliis extensive genus of more than 40 species is almost 

 equally divided betwixt Europe and tlie temperate parts 

 of Africa (Baibary, Egypt and the Cape of Good Hope. ^ 



Order IV.— TETRAGYNIA. 



354. SAURURUS. L. (Lizard's-tail.) 



Flowersin an ament, or crowded spike, scales 

 1 -flowered. Corolla none. Filaments and anthers 

 adnate. Capsules 4, each I or rarely 2-seeded, 

 not opening. 



Stem leafy, many-spiked, leaves alternate cordate. 

 Species. 1. S. c'eniiins. A North American genus of a 

 single species. 



