372 NATURAL HISTORY OF PLANTS. 



lateral adnate stipules. The flowers are axillary or terminal, sessile 

 or shortly pediceHatc, solitary or collected into short spikes of cymes. 

 With a habit and leaves analogous to those of several plants of 

 the genera we have just studied, Coleogyne^ has the characters of 

 TotentUla in the structure of its gynseceum and the direction of its 

 ovule; so that we may say that it is to the latter genus what 

 Chamcehat'ia, Piirshia, and Cercocarpus are to Geum. Its hermaphro- 

 dite flowers have a tubular receptacle lined by a glandular tissue 

 covered with hairs. On the rim of the tube is inserted a calyx of 

 five unequal imbricated leaves.' The androceum consists of an inde- 

 finite number of stamens, whose filaments are inserted, not only on the 

 receptacular cup,' but also on the sheath surrounding the g}Tia?ceura ; 

 the introrse two-celled anthers dehisce longitudinally. The unilocular 

 ovary is inserted, as in Pt/rshin, in the bottom of the receptacle ; and 

 about half-way up its ventral angle' arises a tortuous style, more or 

 less bent on itself near the base. Along the ventral edge of the 

 ovary and the whole length of the style, is a vertical groove ; the 

 edges of its stylar portion are thickened and everted, and covered 

 with stigmatic papilla?. Attached to the wall of the ovary, on a level 

 with the insertion of the style, is a descending, incompletely ana- 

 tropous ovule, whose micropyle looks upwards and outwards, so that 

 in the seed, which is as yet unknown, the radicle must be superior. 

 Around and above the ovary the disk is prolonged, nearly as in li/iodo- 

 typus (p. 3S1), into a sort of sheath, whose finely laciniate or ciliate 

 mouth" gives passage to the upper part of the style.' The only 

 known species of this genus^ is a Californian shrub," possessing 

 little alternate simple appressed petiolate hairy leaves,' with two 

 lateral adnate stipules. The flowers are solitary terminal, with a few 

 lolled imbricated bracts at the base. 



' Tonu., Plant. Fremont., 8, t. iv. — H. H., o-s above stated towards the base of the outer 



Oen., G17, II. 3S. surfaco of the sheath. Its inner surfaco is oo> 



* ThiB calyx is the wime as in Piirxhia. When vered with long erwt hairs. 



it has only four jjetalu their pietlorution is niter- * This also jiresents a longitudinal ventml 



native-iinliricute. groove, whose thickened everted lips bear stig- 



* Towards its lower jmrt, but still certainly iiiatic papillw. 



pcrigynous. ' C. ranwsUsima TouK., loc. cit. — WiLP., 



* The style is inserteil hero, and after first Ann., iv. 6U. 



descending a little way in tlu' bud, rist* \\y and * " Fnttex hahilu Krnineriie" (Torr.). Tlie 



becomes vertical. The surfiu-c of the ovary is habit is also near that of Purshia and some of 



somewhat uneven and tubcrculuted, and above the smiillt-r .1myfl(tiile<r, such as Kmplfctocladmt. 



the insertion of the stylf, as in Adrnostunui. litre anil there the brunches end in sjiines. 



* The tissue of this oj)ening is i>B]>ilU)s«-, like a " Some of these are what are called J/<i/- 

 stigmntic iuHbcp. Sovend stamens arc insert ctl jiii/Ziiiu-rouji. 



