Mr. Haworth's Description of new Succulent Plants. 347 



Willdenow's generic characters. Duval in the above work 

 gives six species of the genus Gastcria*. 



In 1812, in the Synopsis Plantanim Succulentarum, I gave 

 twelve species of Gasteria and two varieties, dividuig them 

 into two sections. 



In 1817, His Serene Highness the Prince de Salm Dyck 

 published, as the division of Aloe called CurviflorcE, in his 

 Catalog. Uaison. nineteen species of Duval's genus Gasteria^ 

 with many varieties ; and very kindly presented to me a copy of 

 his work. Some of the varieties and even species, however, 

 he afterwards relinquished in another work, which he also 

 presented to me ; viz. Ohservationes Botaniccje in Horto Dykensi 

 notatce, published in 1821, in which he gives without any sec- 

 tions [et inter alia) twenty species of " Aloes Curvifloru:, Gas- 

 teria: Haw." and twelve varieties ; with full descriptions of the 

 whole in Latin. 



And here rests our knowledge of the subject-matter of my 

 tenth Decade of new Succulent Plants. Your readers will 

 find hereunder the Gasterian genus more than doubled in its 

 number of both species and varieties ; and all arranged and 

 described under nominated sections, upon the most improved 

 principles of the dichotomous system ; briefly, it is true, — but 

 from living specimens, technically and scientifically, and with 

 characteristics throughout, — from one whose experience and 

 opportunities ought at least to improve, upon all that has been 

 already published upon this subject ; and who remains ever, 

 Very respectfully yours, &c. 



Chelsea, Sept. 1827. A. H. Hawouth. 



Decas decivia Plantarum novarum Succulentarum. 

 Classis et Ordo. Hexandria Monogynia. 

 Gasteria. Calyx petaloideus curvus obclavatus, basi stami- 

 nifer. Capsula parum costata. Fruticulce vix canlesccntes 

 foliis Aloiuni; Jlorihus pendulis. Duval. Plantdc Succulentce 

 in Horto Alen^onio, A.D. 1809. p. 6. 



Obs.—Hcrhcc vel siijfndiccs africanae succulentte _/b///s lin- 

 guiformibus ensiformibusve mucronatis guttatis maculatisve 

 bifariis, vel oblique spiraliter multifariis, et tunc ietate, sem- 

 per ina.'quilateraliter plus minus triquetro-carinatis: jlorihus 

 genitalibus inclusis : a medio ad basin ventricosis et plus minus 

 coccineis, et apicem versus gracilioribus roseis, sive viridibus. 

 Iia3cce planta.', in sectiones dichotomas per tabulam, ut 

 infWi, naturalissime ac certissimo dividuntur. 



• This work M. Duval obligingly sent to me tlionf,'li :i stranjcr ; and I 

 soon after sent to iiini my Sj/nojjsis I'l. Succ, yet do not know wlicthcr he 

 ever received it. 



2 Y 2 GasTE- 



