1670 



SILPHIUM 



SISYRINCHIUM 



BB. Stem-lvs. large. 



c. Z/vs. connate-perfoliate. 



perfoli&.tum, Linn. Cup Plant. Stem square, usually 

 dentate, branched above, about 6 ft. high: Ivs. thin, 

 ovate or deltoid-ovate, the lower contracted into mar- 

 gined petioles, the upper opposite, connate-perfoliate: 

 fl. -heads 2-3 in. across, with 20-30 rays. July, Aug. 

 Western prairies. B.B. 3:40G. 



2329. Silene Vlreinica (X %). (See page 1669.) 



cc. Lvs. petloled or simply sessile. 

 integrifdlium, Michx. Stem 2-6 ft., obtusely 4-angled 

 to terete : lvs. lanceolate-ovate to ovate-lanceolate, oppo- 

 site: fl. -heads 1-2 in. across, with 15-25 rays. Aug., Sept. 

 Western prairies. B.B. 3:407. F.W.Barclay. 



SILVER BELL TREE, Halesia. S. Bush, AnthyUis 

 SurJia-Jovis. S. Tree, Leucudendron ; a\BO Ulwagnus. 

 6. Weed, Potentilla anserina. 



SILYBUM Maria,num, Gaertn., Blessed or Holy 

 Thistle, is sometimes grown in old European gardens 

 for ornament, and also for the edible heads, roots and 

 leaves. It is a large fld. thistle 2-4 ft., perennial. S. 

 Europe. Known also as Carduiis Marianus, Linn. 



SIMMONDSIA (named for the naturalist, ¥. W. Sim- 

 monds). Uuphorbidcew. A monotypic genus differing 

 from Buxus in the numerous stamens and one-seeded 

 carpels: dioecious: rudiment of pistil absent from the 

 Staminate tls. 



Calif 6mica, Nutt. A much-branched shrub with small, 

 sessile, entire, coriaceous, oblong-lanceolate lvs. : stami- 

 nate fls. clustered and the much larger pistillate fls. 

 single in the axils. Dry sand hills of southwestern U. S. 

 —Sometimes cult, for the oil of the seeds, used as a hair 

 tonic. Cult, in S. Calif. J. B. S. Norton. 



SIMPLER'S JOY. See Verbena. 



SIN Apis, included under Brassica, 



SINNtNGIA (after Wilhelm Sinning, gardener at th& 

 University of Bonn). Including Hosanowia. Gesner- 

 dce(e. A genus of about 16 species of Brazilian tuberous 

 herbs. The generic characters of Sinningia are: pubes- 

 cent or villous herbs from a tuberous rhizome: lvs. op- 

 posite, usually large, petioled, the floral ones reduced 

 to bracts: fls. usually large, solitary or fascicled, in the 

 axils, pediceled; calyx-tube shortly and broadly turbi- 

 nate, adnate, 5-angled or 5-winged, the limb foliaceous, 

 broadly 5-cleft or parted; corolla-tube nearly equal at 

 the base or the posterior gibbous, long or broadly cylin- 

 drical, the upper part swollen or bell-shaped; lobes 5, 

 spreading, or the 2 posterior smaller; stamens included, 

 attached to the tube of the corolla; anthers broad, the 

 cells confluent at the apex: glands of the disk 5, dis- 

 tinct, or the 2 posterior more crowded together or con- 

 nate: ovary half inferior; style dilated at the tip: 

 stigma concave, entire or slightly 2-Iobed. The genus 

 includes the florists' Gloxinia, which is properly Sin- 

 ningia speciosa, Hiern., but which is treated in this 

 book under Gloxinia. Other than this species, the Sin- 

 ningias are little known horticulturally. Culture as for 

 Gloxinia. 



conspicua, Benth. & Hook. {Mosanowia conspicua, 

 Kegel). Root tuberous: stem 1 ft. high: lvs. ovate- 

 oblong, short-acuminate, somewhat heart-shaped at the 

 base and dentate: fls. yellow, paler on the outside, 

 marked on the lower part of the tube with purple dots 

 and lines; calyx-tube entirely united with the ovary, 

 equally 5-parted, the segments lanceolate, spreading; 

 corolla-tube obliquely and narrowly campanulate, swol- 

 len and recurved at the base; glands of the disk 2: cap- 

 sule 1-celled: seeds many. 



omata, Benth. & Hook. {Rosanowia orndta, Van 

 Houtte). A hybrid of the above species with a garden 

 variety of Gloxinia with flowers of a bright red ; the re- 

 sult is a plant resembling >S'. conspicua, but differing in 

 having the leaves tinted on the veins and petioles with 

 purple and in having a somewhat more elegantly shaped 

 flower, pure white with purple lines on the outside of 

 the corolla-tube and the inside of a yellowish green, 

 lined with purple. F.S. 23:2423. 



Rosanoivia Hdnsteini, Hort. Jolin Saul, is apparently not 

 known to botanists. f _ w. Barclay. 



SIPHOCAMPYLUS {siphon, tube, and kampylos, 

 curved ; referring to corolla). Lohelidcecf. About 

 100 tropical American herbs and shrubs, with long, 

 showy tubular fls., red, orange or purplish in color and 

 borne singly on long peduncles : bracts absent or rarely 

 2 very small ones. About 10 kinds are cultivated in 

 European warmhotxses, and propagated by cuttings. 

 Allied genera are discriminated under Isotoma. 



betulsefdlius, G. Don. Height 2-3 ft. : stem woody at 

 base: branches rounded: lvs. alternate, petiolate, 3-4 in. 

 long, cordate, acuminate, doubly serrate, nearly gla- 

 brous: peduncles 1-fld., as long as the lvs., thickened 

 upwards: calyx-segments long awl-shaped, with a few 

 notches; corolla 2/^-3 in. long, tube vermilion, limb 

 yellow. Brazil. B.M. 3973. — Tender perennial, not 

 cult, in America, but interesting as one supposed par- 

 ent of Centropogon Lucyanus ; itself of little value. 



W. M. 



SIPHONANTHUS. See Clerodendron Siphonanthus. 



SISSOO TREE. Dalhergia Sissoo. 



SISYRlNCHIUM (an old Greek name first applied to 

 some other plant). JridAceoe. Satin Flower. Blue- 

 eyed Grass. Rush Lily. About 60 species of American 

 perennials, usually with fibrous roots, grass-like, nar- 

 row or terete lvs. and simple or branched stems often 

 flattened and winged, bearing clusters of usually blue 

 or yellow fls. subtended by two spathes: perianth 

 nearly flat or bell-shaped; segments 6, nearly equal, 

 obovate or oblong; stamens inserted on the base of the 

 perianth; filaments more or less connate: ovary sub- 

 globose to turbinate, 3-loculed, 3-valved. The species 

 are of easy culture in any good garden soil. Useful in 

 the wild border, where hardy. 



