432 BOTANY. 



§ EUSILENE. Calyx 10-nerved, veinless or tlie nerres anastomosing. 



* Inflorescence more or less compoundly divaricate, the Ibranches equal or slightly unequal, (in a few 

 foreign species one of the pair reduced to a simple pedicel,) or in some perennial species the stem 

 1-2-flowered. (^Dichasiosilene.) 



(a.) Perennial, dwarf, l-flowered ; calyx campanulate. {Nmosilme.) 



3. S. ACAtTLis, L. See page 36. 



(6.) Perennial ; inflorescence very compound ; calyx ohconic. (BrachyantJux.) 



4. S. MENZiEsn, Hook. See page 36. 



(c.) Annual; opposite branches equal or nearly so; calyx glahrous or rarely glandular-pubescent, in 

 fruit contracted at top. (LeiocalycincB.) 



5. S. ANTIREHINA, L. See page 36. 



* * Perennial ; inflorescence a simple or compound raceme, the branches short and few-flowered, or 

 elongated and again racemose or cymose or verticillastrous. (Botryosilene.) 



(a.) Flowers in simple racemes, the branches short, 1-flowered or the lower 3-7-flowered; pedicels 

 bibracteolate at base; petals emarginate. (CMorantlice.) 



6. S. Dkummondii, Hook. See page 37, under Lychnis. As there stated no specimens are found in 

 our herbariums other than with 4-5 pistils and 4-5 teeth to the capsule. Bourgeau's specimens from the 

 Saskatchewan are similar. This species, under Dr. Rohrback's limitations, is strictly a Viaoaria. 



(J.) Flowers in simple or compound verticillastrous racemes; pedicels bibracteolate at base. 

 {(HiteoB.) 



7. S. Bridgbsi, Eohr. Eoughish-pubesoent, subviscid-glandular above ; stem simple, erect ; leaves 

 long-lanceolate, acute ; bracts and bractlets ovate, acute, densely ciliate ; flowers in a simple verticillas- 

 trous raceme, the pedicels equaling the oblong dilating calyx ; calyx-teeth long, obtuse, ciliate ; petals 

 white, long-linear, bifid with very narrow lobes, the claws ciliolate at base and with the filaments much 

 exserted; capsule ovate-globose, 3-4 times exceeding the stipe; seed large, channeled on the back. — Cali- 

 fornia. 



(c.) Flowers in a subcompound raceme ; claws and filaments woolly-ciliate. {Lasiostemones.) 



8. S. INCOMPTA, Gray. {S. Engelmanni,'Rohv.) Densely roughish-pubescent, glandular above; stems 

 spreading, leafy; leaves oval-lanceolate or oblong, acute ; pedicels shorter than the subnodding flower; 

 calyx-teeth lanceolate, acute, ciliate, the tube cylindrio, becoming ovoid ; petals whitish, the limb small, 

 linear-oblong, scarcely broader than the obtusely auricled claw, bifid, the segments emarginate or 2-lobed, 

 the appendages subulate ; capsule ovate, very short-stipitate. — California. Dr. Gray's name seems to be 

 the older. 



9. S. ScouLEEi, Hook. Stem erect ; leaves lanceolate or linear-lanceolate, acute ; racemes narrow, 

 few-flowered ; flowers erect or nodding, longer or shorter than the pedicels ; calyx oblong-olavate, some- 

 what dilating, the teeth broad-lanceolate, acutish, slightly cUiate; petals white or pinkish, bifid, the 

 lobes oblong, emarginate, the appendages obtuse ; auricles of the claw acute ; capsule ovate-oblong, 3-4 

 times longer than the stipe. — Eocky Mts., from British America to New Mexico^ Washington Territory. 



(d.) Flowers in a loose compound raceme ; claws and filaments glabrous. {Nutantea and Italiea.) 



10. S. STELLATA, Ait. From Canada to Georgia and west to Illinois and the Indian Territory. 



11. S. OVATA, Pursh. Stout, 2-4° high ; leaves in pairs, large ; calyx tubular ; petals gash-fimbri- 

 ate. — Georgia and Carolina. 



HOSACKIA. 



Following Dr. Gray's Synopsis, Froo. Acad. FMl, Deo. 1863, pp. 346-352. 



§ 1. SYEMATIUM, Vogel. Legume small, l-4-s6eded, subulate or attenuate, often torose, incurved. 

 Keel not attenuate upward, mostly obtuse ; claws slightly exserted or included, that of the 

 vexHlum somewhat apart. Perennial herbs or somewhat shrubby, (H. micrantha annual,) with 

 very short 3-7-foliolate leaves and black glandular stipules ; flowers in sessile or short-peduncled 

 umbels, small, yellow or whitish, often turning reddish. 



* Mostly shrubby, with rigid slender branches, glabrous or silky puberulent becoming glabrate ; 

 leaflets 3, sometimes 5, small, thick, somewhat evergreen. Californian. 



