•232 BOTANY OF SOCOTRA. 



intusque puberulo panno atro antice colorato, limbi lobis late rotundatis obscure dentic- 

 ulatis ; styli lobis complanatis. 



Socotra. Common on the hills, at elevations above 1000 feet, B.C.S. 

 nn. 262, 317, 558. Schweinf. nn. 568, 610. 



Distrib. Endemic. 



From some localities specimens of this plant show much smaller and narrower 

 leaves, with less hairy clothing and therefore more vividly green. The 

 branches, too, are shorter, somewhat erect, and at the same time the spike of 

 flowers becomes greatly reduced in size, assuming a deltoid subcapitate form. 

 Of this character are our specimens, n. 558, and Schweinfurth's, n. 568. 



Order LVI. YERBENACE^. 



A large order of the warmer regions of the world. Many species occur in 

 extratropical regions of the southern hemisphere, but few in these regions of 

 the northern hemisphere. Five genera are represented in Socotra. One of 

 these is endemic, one is widely dispersed in the old world, though also occurring 

 in America, whilst a third is chiefly American, with a few African representa- 

 tives, and some world-wide weeds. The other two are cosmopolitan in the tropics. 



1. LIPPIA. 



Lippia, Linn. Gen. n. 781 ; Bentb. et Hook. Gen. PI. ii. 1142. 



A considerable genus of chiefly American herbs or shrubs, but a few are 

 African and two are common tropical weeds. 



L. nodiflora, Michx. Flor. Bor. Amer. ii. 15 ; Schauer in DC. Prod. xi. 

 585; Ach. Rich. Tent. Flor. Abyss, ii. 168; Boiss. Flor. Orient, iv. 532; 

 Wight Ic. t. 1463. 



Verbena nodiflora, Linn. Sp. 28. 



V. capitata, Forsk. Fl. iEgypt. Arab. 10. 



Zapania nodiflora, Lamk. Illustr. i. 60, t. 17, f. 3. 



And many other synonyms. 



Socotra. In marshes, abundant, B.C.S. n. 10. 



Distrib. Cosmopolitan in the tropics. 



2. PRIVA. 



Priva, Adans. Fain. ii. 505 ; Bentb. et Hook. Gen. PL ii. 1145. 



A small genus of nine species of herbs, widely dispersed in the warmer 

 regions of the world. 



P. leptostachya, Juss. in Ann. Mus. Par. vii. (1806), 70 ; Schauer in D( !. 

 Prod. xi. 533. 



P.dcntata, Juss. loc. cit.; Schauer loc. cit. ; Acb. Eicb. Tent. Flor. Abyss, ii. 165. 



P. Forslcaolii, E. Meyer Comment. PL Afr. Austr. 275 ; Jaub. et Spach, 111. PL Or. v. t. 455. 



