OF ARTS AND SCIENCES. 161 



which is a jjenuine Ratacea ; Holacantha Emoryi, Gray, an undoubted 

 Siinaruhacea ; Koeberlinia spinosa, Zucc, which has been referred to the 

 same order, but is more anomalous ; and tinally Caiiotia holacantha.^ 

 which, if I mistake not, must take its place among the typical Rutacece, 

 notwithstanding some anomalies. 



The pollen of Canotia, as pointed out to me by Prof. Rothrock, who 

 has supplied the best flowering specimens we possess, is exactly repre- 

 sented by Sach's figure of that of Epilobium, viz., that in his Lehrbuch, 

 fiir. 349. 



a 



SYMPETALEIA, Nov. Gen. Loasaceariim. 



Calycis tubus globoso-obconicus ; limbus o-partitus, lobis tubo 

 sequilongis. Corolla (alte gamopetala !) hypocraterimorpha ; tubo 

 elongato subclavato intus infra medium piloso-annulato ; limbo 5-par- 

 tito, lobis rotundatis testivatione imbricatis. Stamina circiter 25, 

 corollte tubo sub fauce ant inordinate ant 5-seriatim inserta : fila- 

 menta brevissima, tenuia : antherse subreniformes, uniloculares, bival- 

 ves. Ovarium uniloculare : stylus filiformis : stigmata 5, brevia, 

 conniventia. Ovula indefinite plurima, placentis 5 parietalibus in- 

 serta. Capsula subglobosa, apice tantum dehiscens. Semina per- 

 plurima, oblonga ; testa tenui conformi oblique striato-costulata. 

 Embryo in albumine parco granuloso axilis, rectus, oblongus ; cotyle- 

 donibus brevibns. 



Sympetaleia aurea. Herba annua, humilis, Eucnidis facie, vis- 

 coso-hirsutala et setis urentibus Itevibus hispida ; foliis longe-petiolatis 

 rotundato-cordatis crenatis vel 3-o-lobatis ; pedunculis termiualibus et 

 supra-axillaribus, fructiferis elongandis recurvis ; corolla aurea semi- 

 poUicari. — Pulpito Point, Lower California, Dr. Thomas H. Streets, 

 U. S. N. Coll. in February, 1875 ? 



In this we have the anomaly of a Loasaceous plant with a truly 

 gamopetalous corolla! In Eucnide of Zuccarini, — a genus which had 

 been merged in Mentzella, but which Mr. Watson, in the Botany of 

 California, has properly reinstated, — the petals are united at the very 

 base into a ring, which bears the stamens. Here they are combined 

 into a long tube, and even to the base of the spreading limb, and the 

 stamens are borne in and below the throat. The imbricated aestivation 

 of the corolla is shared by Eucnide, Mentzelia, &c. ; but the one-celled 

 anthers, of the Malvaceous pattern, are peculiar. The tube of the 

 calyx is completely adnate to the ovary, which is crowned by a flat 

 disk ; and the corolla is epigynous. The habit of the plant is wholly 



VOL. XII. (n. S. IV.) 11 



