160 PExYTANDRIA. MONOGTXIA. 



. Flowering' from Aii^e^iist to November. A very elegant 

 pereiinial, but not suft'rutlcose, as described by Linnaeus. 



3. argyrocoma. Cespitose, procambent and pubescent; 

 leaves lintar, pim^e^endy acute, viii6us, and nerveless; sti- 

 pules entire; braci es equal with the flowers; cyme dicho- 

 toiiious, crowded, interior apex qf" the calix bearded, ex- 

 terior setaceoubly acuminate. 



Smaller than the preceding- to which it is very nearly 

 related; the cyme in tins species resembles a capitu- 

 lum, being- almost obscured by the numerous and crowd- 

 ed bractcs; the points of the cahx are nearly its length. 

 Sterile setjc short; style bifid; utriculus pubescent at the 

 summit, and without valves. 



On rocks, in the mountains of upper Carolina, and on 

 the banks of French Broad river, in Tennessee, near the 

 thermal springs. 



4. *sessi!(fiora. Cespitose and diffusely branched; leaves 

 glabrous, very short, linear, reflected and acute; stipules 

 .subulate, irregularly lacerate, nearly equal with the leaves; 

 iiowers terminal sessile, internal points of the calix arch- 

 ed, external capillary attenuated. 



Densely cespitose and smooth, leaves without visible 

 nerves. Flowers irregularly crov/ded at the summits of 

 the branches, not cymose. Style bifid; utriculus not 

 valvular; sterile setae 5. 



On the highest lulls of the Missouri, near Fort Mandan. 

 Flowering from June to September. Nearly allied to 

 IIer}iiaria. 



'I'o this genus is referrible lilecebrum Paronychia of 

 the south of Europe, said to have a capsular utriculus of 

 5 valves? several other species of that genus also probably 

 belong to this. 



236. GLAUX. L. (Black Salt-wort.) 



Calix campanulate, 5-lobed, coloured, infe- 

 rior. Corolla none. Capsule globular, suri'ound- 

 ed by the calix, 1-cclled, 5-vaIvcd, 5-sceded; re- 

 ceptacle rounded, marked n\ ilh favulose punc- , 

 tures. 



An herbaceous, creeping, maritime plant with opposite ' 

 oblong leaves, and small axillary subsolitary sessile ' 

 faQwe^s. 



Species. 1. G.mantimn. A genus consisting of a single 

 species found on every sea-coast of the northern hemis- 

 phere within the temperate regions. 



