SAXIFRARACEAE (SAXIFRAGE FAMILY^ 451 



Oalyx-lotes as long as or exceeding the tube. 

 Stamens at length equaling or exceeding the calyx -lobes ; berry smooth. 



Oalyx 9-13 mm. long . 8. B. gracile. 



Calyx 5-7 mm. long. 

 Petioles usually bearing only simple elongate glands ; bracts of the 



raceme mostly rounded at tip i. B. rotwndifoUum. 



Petioles bearing mostly compound elongate trichomes ; bracts of 

 the raceme mostly pointed. 

 Principal leaves cuneate to truncate at bdse. 

 Mature leaves glabrato or slightly pilose beneath . . . 6. B. (myacanthoides. 

 Mature leaves densely soft-pubescent . (6) R. oxj/aaanthoides, v. calHciila. 



Principal leaves subcordate at base . . . (.51 Ji. oxi/acanthoidea. v. mxomm 



Stamens distinctly shorter than the calyx-lobes ; beiTy hairy or glandular 6. B. Gromularia. 

 * * Flowers several in elongate racemes. (Cukkants.) 

 Calyx eampanulate to saucer-shaped. 

 Leaves sprinkled, at least beneath, with resinous atoms ; calyx eam- 

 panulate ; fruit black. 

 Calyx-tube equaling the lobes. 



Bracts shorter than the pedicels S. B. nigrum. 



Bracts longer than the pedicels ...'..... 7. B.Jloridum. 

 Calyx open-oampanulate, the lobes much exceeding the short tube 9. B. hiidsonianmn. 

 Leaves with no resinous atoms (except occasional glands on the pedi- 

 cels) ; calyx flattish. 

 Stems densely covered with prickles ; fruit black . . 10. B. Ineustre. 

 Stems without prickles ; fruit red. 

 Ovary and berries glandular-bristly . . . . . 11. B. prosiratum. 

 Ovary and berries smooth. 

 Upright shrub ; middle lobe of leaf ovate ; pedicels without capi- 

 tate glands ; calyx yellowish 12, i?. vulgare. 



Decumbent shrub ; middle lobe of leaf deltoid ; pedicels with 



capitate glands ; calyx purplish . . . 13. B. triate. 



Calyx salver-form, with elongate tube . . .14. B. aureutn 



1. R. Cyn6sbati L. (Prickly G., Dogberry.) Infra-axillary spines siento', 

 0.5-1 cm. long; leaves round-ovate, rounded or subcordate at base, sofp-puies- 

 eent ; racemes loose, 2. 5-6 cm. long ; stamens and undivided style not longer than 

 the broadly bell-shaped calyx; berries large, armed with long prickles or rarely 

 smooth. — Rocky woods, w. Me. to the mts. of N. C, w. to Man. and Mo. 

 Var. glabrAtl'm Fernald. Leaves glabrate or only sparingly pilose on the 

 nerves beneath. — O. to N". C. 



2. R. huronense Rydb. Said to resemble B. Gynosbati, but with shorter 

 racemes, calyx-tube slender, and styles united only below the middle. — L. Huron. 



3. R. gricile Miclix. (Missouri G.) Spines often long (7-17 mm.), stout 

 and red; peduncles long and slender ; flowers white or whitish ; filaments capil- 

 lary, 1-1.5 cm. long, generally connivent or closely parallel, soon conspicuously 

 longer than the oblong-linear calyx-lobes. (JJ. missouriense Nutt.) — Ct. to S. 

 Dak. and southw. 



4. R. rotundifblium Michx. Spines short (2-5 mm. long) ; leaves rather firm, 

 sparingly pilose beneath, mostly rounded at base; peduncles short; flowers 

 greenish or the lobes dull purplish ; fllaments slender, 4-7 mm. long, more or 

 less exceeding the narrowly oblong-spatulate calyx-lobes. — Kooky banks, w. 

 Mass. and N. Y., s. in the Alleghenies to N. C. 



5. R. oxyacanthoides L. (Smooth G.) Spines 8-8 mm. long; leaves thin 

 but leathery, glabrescent, the petioles often with some naked glands among thi- 

 compound trichomes; peduncles very short; fiowers greenish yellow to dull pur- 

 plish ; stamens usually equaling the rather broadly oblong mostly glabrous calyx- 

 lobes. — Nfd. to Pa., w. to N. Dak. and Man. — The common smooth-fruited 

 gooseberry of the North, the whitish prickles and spines often numerous. Var 

 CALofcoLA Fernald. Leaves densely soft-pubescent; calyx pubescent. — Marlj 

 swamps and limestone rocks, e. Que. and n. Mich. Var. sAx6snM (Hook.' 

 Covllle. Calyx and subcordate leaves essentially glabrous. — Nfd., e. Que., Capi 

 Breton I. , L. Superior, Rocky Mts. , 



6. R GrossulXria L. (Euxopean G.) Spines stout, 1-1.5 cm,, long, 

 peduncles very short, l(rarely 2)-flowered; ^alyx hirsute, its lobes oblong. 

 {B. Uva-crispa Jj.) — Escaped from cultivation and locally established in Que., 

 N. E., and the Middle States. (Introd. from Eu.) 



7. R. flfiridum L'H^r, (Wjn) Black C.) Leaves slightly heart-shaped, 



