ON WHITI-AVJA. 311 



Description of a new Genus of Hydrophyllaceje, from 

 California. By W. H. Harvey, M.D. M.R.I.A. 



{With two Plates, Tab. XI. XII.) 



Among Dr. Coulter's Californian plants are two remark- 

 ably handsome species of Hydrophyllacece with larger flowers 

 than any others of the order, and belonging, as far as I can 

 ascertain, to an undescribed genus. I have thus the oppor- 

 tunity, of which I gladly avail myself, of conferring on my 

 friend Francis Whitla, Esq., of Belfast, a deserved compli- 

 ment, by giving his name to the genus. To Mr. Whitla's 

 voluntary and unremitting exertions, the prosperous and 

 advancing state of the Belfast Botanic Garden is mainly to 

 be attributed ; and the good service which he has thus ren- 

 dered to Botany, ought alone to entitle him to the gratitude 

 °r botanists, a gratitude usually expressed in this manner. 

 But besides these important services Mr. Whitla's ardent 

 attachment to botany, intimate acquaintance with the plants 

 of Ireland, and discovery, in this country, of the Equisetum 

 elongatum, amply entitle him to a distinction of this kind. 



Whitlavia, Harv. 



Calyx quinque-partitus, sinubus nudis. Corolla hypogyna, 

 tubuloso-campanulata, tubo inflato calyce multo longiore, 

 mtus basi squamulis quinque staminibus oppositis iisque 

 adnatis aucto, ore subconstricto, limbo quinque-lobo, sub- 

 maequali, patente. Stamina 5, squamulis corollae adnata, 

 exserta. Ovarium spurie biloculare, placentis carnosis 

 maximis. Ovula plurima. Stylus exsertus, bifidus. Cap- 

 *ula subcompressa, unilocularis, loculicida, valvis medio 

 placentiferis. Semina numerosa, tuberculata. — Herba Ca- 

 lifornicee, caulescentes, annua, glanduloso-pubescentes. Cau- 

 ks erecti, fleaniosi. Folia alt erna, longe petiolata, indivisa, 

 <wata, grosse crenato-dentata, hirsuta. Flores racemosi, 

 tyeciosi, albo-carulei, pedicellati, pedicellis gracilibus, se- 



