70 



CAPPARIDEiE. [Cleome. 



brevissime stipitatum, obovatum, plano-compressum, lato-margfinatum, alatum, apice emarg-Inatum, stj/lo 

 subaeque longo, demum, ut vldetur, deciduo terminatum. Sti/pna obtusum, parvum. Silicula depen- 

 dens forma et structura fere omnino germinis, sed estylosa, convexo-plana, utrinque subreticulata, vix 

 uninervis, unilocularis, evalvis. Semen solitarium, paulo infra apicem, sublateraliter iasertuiu, pendens, 

 lato-obovatura, compressunij fuscum. Embryo flavus. Cotyledones suborbiculatue, piano-con vexK : lladicula 

 subjEQue loDga, insertione evidentissime dorsalis, sed obliqiia et versus margines cotyledonum incumbens. 



Hab. On moist ground, near the Great Falls of the Columbia. Fl April, May. Douglas, — I long 

 hesitated whether or not I should unite this interesting plant with the genus Tauscheria of Dr. Fischer, 

 with which it sufficiently accords in habit, and, ia many respects, in the singular structure of the seed-vessel. 

 In both the species of Tauscheria^ however, of which I have excellent specimens from Dr. Fischer and Profes- 

 sor Ledebour, the silicula is truly cymbiform, the margin is curved inwards, and the extremity, instead of being 

 broad and notched, as in Thysanocarpus, is narrow and elongated into a beak, like the narrow prow of a 

 vessel. Its perfect embryo I have not been able to examine : but in our plant, this has always its radicle 

 inserted at the back of one of the cotyledons, and then inclines obliquely, so that the greater part of its 

 length is applied to the edge or margin of the cotyledons. In the figure here given, the seed did not occupy 

 the whole of the cavity of the cell, as was the 6ise with more fully ripe capsules, given to me by Mr. 

 Douglas after the plate was engraved, and wliich, I believe, were produced by plants cultivated in the Garden 

 of the Horticultiu*al Society. 



Tab. XVIII. A. Thysanocarpus curvipes : and a fructified extremity of a plant: — natural size. Fig, \, 

 Flower ; Jig, 2, Stamens ; Jig. 3, Sepal ; Jig. 4, Petal ; Jig. 5, Side view of a germen ; Jig. 6, Front view 

 of do.; Jig. 7, Silicula; Jig. 8, The same, cut through transversely; Jig. 9, Silicula, from which a portion 

 is removed to show the situation of the seed; Jig. 10, Embryo, showing the insertion and direction of the 

 radicle ; Jig, 1 1, Section of do, ; Jig. 1 2, Embryo, seen from the opposite side : — more or less magnijied. 



Ord. X. CAPPARIDE^. Juss, 



Trie. I, Cleome^. Fructus vere capsularis^ valvis subniemhranaceis dehiscent thus* 



HerhcB aid suffrutices^ foliis scepe compositls, pube smpe glandulosa. DC- 



w 



1. CLEOME. Linn, 



4 



Col, 4-sepalus3 patens (vel erectus) subeequalis. Pet 4. Torus subhemisphasricus. 

 Stam, 6j rarius 4. Siliqua dehiscens, in calyce stipitata aut sessilis. DC. 



1. C lutea; herbacea glabriuscula, toro parvo, tHecaphoro elongate, foliis quinque- 

 foliolatis, foliolis lanceolatis acutis, siliqua lanceolata stylo acuminata glabra stipitis 



longitudine. (Tab. XXV.) 



Radix parva, descendens, annua vix fibrosa. Caulis erectus, spithamseus vel etiam pedalis, erectus, 

 teres, foliosus, simplex vel ramosus, glaber. Hami erecto-patentes. Folia longe petiolata, quinquefolio- 

 lata; foliolis unciamsesquiunciam longis, lanceolatis, acutis, nonnunquam mucronulatis, inferne in petiolulum 

 brevissimum attenuatis, glabris vel pilis minutis sparsis pubescentibus. Petiolus foUis plerumque longior, 

 gracilis, glaber. Folia Jioralia^ vel bractea, integra, lanceo]ata, breve petiolata. Flores in corymbum ter- 

 minalem dispositi, intense lutei vel flavi. Pedicelli unciam sesquiunciam longi, gracillimi. Calyx parvus 

 4^ep&lus, jequalis, sepalis anguste lanceolatis, acuminatis, fere subulatis, membrauaceis, erectis. Corolla : 

 Petala 4, insequalia, calyce duplo longiora, oblongo-obovata vix unguiculata. Torus parvus, subhemisphieri- 

 cus. Stamina 6, quorum, ut videtur, 2 constanter longiora, antheris parvis oblongis curvatis, 4 breviora, an- 

 theris longis linearibus mucronatis, flavis. Thecaphorum gracile, elongatum, petalls longius, germiue 3-plo 

 longius. Germen oblongo-cylindraceum, viiide, glabrum. Stylus gracilis, filiformis, germine duplo brevius, 

 viride. Stigma obtusum, vix capitatum. Siliqua dehiscens, 6-8 lineas longa, lanceolata, teres, stylo persistente 



