2 '74 llOSACEiE. CvUoijyue. 



8. COLEOQYNE, Ton. 



Calyx persistent, 4-i)aili'd ; l.)l)i!S larye, ovate, imbiicaLed, with a iiicmbniiiaccous 

 margin, colovuil witliiii. Petals nouo. Stamens numerous, inserted upon the base 

 of a tubular torus which iueludos the ovary. Carpels solitaiy (rarely 2), glabrous, 

 oblong : stylo laterul, very villous at Inise, twisted, cxserted, persistent : stigma do- 

 current : ovule solitary, ventrally attached opposite the base of the style. Fruit a 

 coriaceous akene, glabrous, included. Seed with a rather spongy testa, without 

 albumen : radicle superior. — A dill'usely branched somewhat spinescent shrub ; 

 leaves opposite, small, entire, coriaceous ; stipules minute ; llowers solitary, termi- 

 nal on the short branchlets, subtended by 1 or 2 pairs of .'i-lobed bracts, yellow, 

 showy. A renuukable genus, of a single species. 



1. C. ramosissima, Torr. iMuch bianched, ;} to feet high, the short rigid 

 brunches opposite and .spinescent; bark gray : Iraviis approximate upon the branch- 

 lets, liuear-oblanceolate, 2 to 4 lines long, thick, usually 2 - 4-sulcatc on the lower 

 side, puberulent with appressed hairs attached by the middle; stipules short, trian- 

 gular : ilowers half an inch broad : caly.x-lobes often ciliate-toothed : tube of the 

 torus membranaceous, dilated below unci narrowcid to tho shortly f) toothed apex, us 

 long as the caly.x and very slemh'r lilamenls, densely white-villous within : akene 

 somewhat coni[)resseil, oblong-ovate, the obtuse; upe.x incurved : seed suspended 

 from near the summit ami iiiling the akene. — PI. Frem. 8, t. 4 ; Parry, Am. 

 Naturalist, ix. 270. 



About the head-wateis of tlie Mohave {Fremont) and eastward in Southern Nevada and Arizona 

 to Southern Colorado. 



9. CERCOCARPUS, IIBK. Mountain Mahogany. 



Calyx narrowly tubular, the campanulato 5-lobed limb deciduous ; lobes slightly 

 imbricated. Petals none. StanuMis 15 to 25, in 2 or 3 rows on the limb of the 

 calyx. Carpels solitary (rarely 2), narrow, terete : style terminal : stigma terminal : 

 ovule solitary, asceiuling. Fruit a coriaceous linear terete villous akene, included in 

 the enlarged calyx-tube, caudate with the elongated exserted plumose twisted style. 

 Seed linear, with membranous testa : radicle inferior. — Shrubs or trees ; leaves 

 alternate, simple, evergreen ; stipules very small ; llowers small, axillary or terminal, 

 solitary or somewhat fascicled. 



A geuus of 4 or 5 simcius, chiully of the interior of the continent, one being Mexican. 



1. C. ledifolius, Nutt. A shrub or small tree, usually 6 to 15 feet high : leaves 

 narrowly lance(.late with the margins more or less revolute, thick-coriaceous and 

 somewhat resinous, entire, moie or less tomentose, but usually glabrous above, ^ to 

 U inches long, acute, narrowed at base to a short petiole; midnerve prominent: 

 flowers sessile, tomentose : limb of the calyx 2 lines long, deeply toothed ; tul,)e be- 

 coming 3 to 5 lines hnig : tail of the akene at length 2 or 3 inches long. —Torr. & 

 Gray, Fl. i. 427; Hook. Ic PI. t. 324; Nutt. Sylva, ii. 28, t. 51 ; Wabson, Pot. 

 King Exp. 83. 



Olanehe Mts. (Rolhroek) at 9,400 feet altitude, and on the eastern slope of the Sierra Nevada 

 from Mono Pa.ss at 9,0OU feet altitude (liolandcr) to Oregon, and eastward in the mountains to 

 tiie Wahsatch. It is po])ularly known as Mountain Malioguny, having a hard and heavy dark- 

 colored wood, susceptible of a fine polish. It sometimes beeonu.s a liaudiome tree, 4" or 50 feet 

 high, but is usually low, with a compact head. 



2. C. parvifolius, Nutt. A shrub, usually 2 to 10 feet high, branching from a 

 thick base, sometimes 15 to 20 feet high: leaves cuneate-obovate, less coriaceous, 



