CENTURIA X. G9 



1000. RoTHECA R. (ii, ind.) cal. Sdent. cor. 

 subbilab. vel 5 lobis ineq. 5 deflexis, infero par- 

 vo, cetera ut Clerodendron. — Types 1 R. bi- 

 color Raf. Clerod. macrophyl. Sims b. m.2536. 

 fol. oppos. latis ovatis acuiii. sess. serrat. subt. 

 toment. fl. panic. IMauritiiis fl. yellow, lower lip. 

 blue. — *2 R. ternifoJUi Raf. Volkameria serrata 

 L. aiict. Rheed. 4 t. 29. fol. ternatis ovat. serrat. 

 fl. concolor Malabar. See Egena 317. 



CENTURIA XI. 



DICOTYLES PERirETALIC. 



1001. Convolvulus. This G. and Ipomea 

 have been so blended and perplexed by botan- 

 ists that they are still in utter confusion ; nearly 

 250 sp. belong thereto, (166 sp. are in the mo- 

 nograph of Convolv. by Desrousseaux and Smith 

 which are constantly shuffled from one to another 

 there being no distinction between them ! al- 

 thouiijh they offer 50 good characters to distin- 

 guish 50 Genera out of them. — Calix single or 

 double^ equal or unequal, corolla rotate or 

 campanul. or infund. or hypocr. or tubular, 

 entire or dentate or lobate, stamens quite un- 

 equal or subequal, stigmas 1 or 2, capitate or 

 lobed, capsule l-2-3-4iloc2dar. cells 1 to 4 seeds 

 &/C. — Necker began a reform by proposing the 

 G. Milhania, Apomea, Stevogtia . . . others 

 have added Calystegia, Pharbitis, Murucoa &c. 

 I proposed between 1808 and 1820 Stylisma, 

 Diatrema, Ornithosperma, Rhodoxylon and see 

 my Stomadena 1 1, Coiladena 12 in this flora. I 

 will now still increase them to 48 Genera with 

 30 subgenera and thus reform this fine group of 

 Genera, refering 175 typical sp. to them. — The 

 real G. Convolvuhs Raf. has cah'x simplex 



