Rosa. ROSACEiE. 467 



cles fcw-flowcred ; sepals ovale, inucrnnate or acumliiaic, shorter ilian the 

 (red. Hook.) ])etals. — Cham. <.y Sclderlit. ! in Linn/ea, 2. p. 11. R, Mcn- 

 zicsii, HooTc. ! Jl. Bor.-Ain. 1. p. 141, (.y W. Beechcy, i. c. 



California, Mcnzies ! Chamisso ! — Probably not a native of the North West 

 Coast, as the specimen of Mr. Menzies in the Banksian lierbarium is stated 

 to come from California. The ]>lant of Chamisso is the same : the species 

 is a Blackberry, nearest allied, perhaps, to our R. cuneifolius. 



--"23. R. macropdalus {Do\\a\.) '. hirsute-pubescent, " diitscious" ; stem tail, 

 shrubby ; branches and petioles, as also tlie midrib of the leaflets and the 

 calyx, armed with setaceous ])rickles ; leaves 3-foliolate, the lower ones often 

 ))iniiately o-foliolate ; leaflets ovate, incised and serrate, the terminal one ra- 

 ther distant; stipules lanceolate ; peduncles axillary and terminal, 2-7-flow- 

 cred ; sepals acuminate, nearly e(|ualling the oblong spreading petals; fruit 

 oblong, black.— Z)oM»L in Hook.! fi. Bor.-Am. 1. p. 178, <. 59; Hook. S; 

 Arn.! hot. Bccchcy, p. 140. R. myriacantluis, Dougl. ! mss. 



Along rivers and in low woods, Oregon, Douglas ! Dr. Scouler ! Nultall! 

 Mr. Tolmie ! and in California. — Branches often glaucous. Leaves on the 

 sarmentose branches often 5-foliolnle ; the lower pair distant, conspicuously 

 petif)lulalc, and often 2-lobed. There are two forms, one with the leaflets 

 mostly acute; the other {IS. mollis. Null. R. myriacantha, Dougl.) with the 

 leaflets mostly obtuse and more pubescent, and the prickles nearly straight : 

 the ui)permost leaves often simi)lc. Mr. Nuttall remarks that the flowers are 

 dicEcious, or rather dia3cio-polygamous. " The figure of Honker represents 

 the sterile plant. In the fertile, the flowers are not half the size, and want the 

 stamens altogether. The flowering branches are all trifoliolatc, and the leaves 

 are often persistent. The fruit (a blackberry) is cyiindric-oval, brownish- 

 black, juicy, and sweeter than our common blackberry (R. villosus)." Nutt. 



Tribe III. ROSEjE. Juss. 



Calyx urceolate ; the tube contracted at the niouth, at length 

 fleshy or baccate, including the numerous distinct ovaries ; the seg- 

 ments somewhat spirally imbricated in gestivation. Carpels (ache- 

 nia) l-seeded and indehiscent, crustaceous, hairy, with 2 suspended 

 ovules, one above the other, inserted on the whole inner surface of 

 the thickened torus or disk which lines the tube of the calyx : styles 

 terminal or nearly so, somewhat exserted, distinct, or connate above, 

 rather persistent. — Shrubby and prickly plants, with pinnate leaves, 

 rarely reduced to a single leaflet, and mostly adnata stipules. 



25. ROSA. Tourn. ; Linn.; Lam. ill. t. 440; Lindl. monogr. Ros. (1820.) 



Character same as of the tribe. Stipules present. 



* Styles coherent into a column. 



^ \. R. sdigera (Michx.) : branches elongated, ascending, glabrous, armed 

 with a few stipular or scattered stout somewhat uncinate prickles ; leaflets 

 (large) 3-5, ovate or oblong-ovate, acute or acuminate, sharply serrate, gla- 

 brous and rather shining above ; stipules narrow, the free apex lanceolate or 

 subulate; petioles, peduncles, and calyx glandular; flowers corymbose; 

 calvx-segments acuminate or attenuate-cuspidate, entire, or commonly with 

 2 or more lateral setiform appendages ; petals obcordate, rather caducous ; 



58 



