Silybum 



( 338 ) 



Sirex 



amara, 10', My., ft., yel- 

 lowish wh- Bitter or 



SILYBUM. 



Hardy perennial, spiny herbs (prd. Composite), 

 Thistle-like in character. Propagation, by seeds, in 

 .lutumn or spring. The plants are frequently 

 found in waste ground from self sown seed. Any 

 soil will do, but plenty of moisture is required. 

 At one time the roots were boiled as a substitute 

 for Artichokes, and the young leaves picked for 

 salads. Marianum makes a handsome border 

 subject. 



Principal Species : 



marianum, 1' to 5', sum., hdy., Ivs. rosy pur., 

 spotted wh. Blessed, Holy, and Our Lady's Milk 

 Thistle. 



SIMABA (syn. ZWINGERA). 



Stove and greenhouse evergreen or deciduous 

 trees and shrubs (ord. Simarubea;), Propagation, 

 by cuttings of matured shoots, in sandy soil, in 

 heat ; also by imported seeds Soil, turfy loam 

 three parts, leaf mould one part, and sand. 



Principal Species : 



Cedron, 20 My sum , fruits as large as a swan's 

 gg- 



SIMARUBA. (UiTTER WOOD.) 



Evergreen ^tove trees of economic importance. 

 The drug known as Simaruba bark is furnished by 

 amara. (Foi culture we QUASSIA.) 



Principal Species : 



Mouutairi Damson, 

 Stavewood. 

 Tulse, at., car. 



SIMETHIS 0.'/><s MORGAGNIA and POGOK- 



ELLA) 



The only species, bicolor (/ planifolia), June, 

 white and purple, is a hardy perennial herb (prd. 

 Liliacese) It is of little decorative value, though 

 interesting Propagation, by division. Soil, peat 

 and sand. 



SIMMONDSIA (syn. BROCCHIA). 



The only species, californica, green (ord. Eu- 

 phorbiacetc), is a hardy, branching shrub, propa- 

 gated by cuttings, and thriving in good loam three 

 parts and sandy peat one part. It is of little 

 value. 



SINGANA. 



An obscure genus (ord Leguminosae) of no 

 garden value. One species only, guianensis, is 

 enumerated by Index A'en-ensis. 



SINNINGIA. 



Dwarf, hairy, stove herbs (ord. Gesneraceae), 

 with showy flowers, and frequently handsome lea^ e *. 

 The superb modern Gloxinia (see p. 33!)) is really a 

 Sinningia (speciosa). A curious hybrid, called 

 Gloxinia Tapeinotes. was raised a few years ago 

 between S. Carolina? (barbata) and a spotted 

 Gloxinia, but the cross has not proved of much 

 practical value. (For culture, see GLOXINIA.) 



Principal Species, Hybrids, and Varieties : 

 Caroliiuc, sum., st., wh., Ivs. pur. and yel., small, 



red blotches, Ivs. ofteu 

 1' long, crim. below 

 (syns. kirbata and 

 Tapeinotes Carolina?). 



major, larger. 



concmna, st., sum., aut., 



nearly round (sy. Ste- 

 nogaster concmna of 

 IMimical Maqn:ine 

 5253, and Steuogastra 

 concinua). 



- multiflora, lil., bl., 

 Ivs. larger, drooping 

 (si/n. Stenogastra multi- 

 flora). 



conspieua, 1', st., sum., 

 yel., dotted pur., Ivs. 

 heart shaped, florifer- 

 ous (syiu. Biglaudularia 

 and Rosanowia con- 

 spieua). 



speciosa, Sep., st., vio. ; 

 many hybrids and vars. 

 (xi/ns. Gloxinia Passing- 

 hamii and speciosa, and 

 Ligeria speciosa). The 

 Gloxinia, The follow- 

 Other Species : 



guttata, H , Je., st., pale 

 grn., spotted pur., Ivs. 

 velvety. 



Helleri, 3" to 4'', Je., st., 

 red and wh., pur. spot- 

 ted, 3" long, Ivs. vel- 

 vety (syn. velutina of 

 Botanical Mat/nzme 

 4212). 



hirsuta, prostrate, Jy., 



ing are a few well- 

 marked vars. 



albiflora. wh. (.s?/. 

 Gloxinia speciosa albi- 

 flora of Jlotanical Mag- 

 =;/ 3206). 



caulescens, Ivs. larger 

 (>//>/. Gloxinia caules- 

 cens). 



rubra, red, very fine 

 (syn. Gloxinia rubra). 



youngiana, 1' to 1 J', sum., 

 st., vio. or pur., with a 

 yellowish wh. throat ; 

 hybrid (speciosa X 

 velutina). 



st., lil., dotted vio. (syn. 

 Gloxinia hirsuta). 



inon/iesiana, Aug., st., 

 vio., dotted red, Ivs. 

 heart shaped (syn. Glox- 

 inia speciosa Menziesii 

 of Botanical Muyttzine 

 3943). 



velutina, 1J', Je., st., pale 

 grn.Jvs, with pur. veins. 



SIPHOCAMPYLUS (syn. LOBELIA of 

 PRESL.). 



A large genus (ord. Campanulacese) of stove and 

 greenhouse herbs and sub-shrubs, some being 

 climbers, but comparatively few of them finding 

 a place in collections. Propagation, by cuttings. 

 Soil, turfy loam and peat in equal parts, with sand. 



Principal Species : 



Sinapis (see Braisica), 



betulaefolius, 3', Jy., st. 



per. herb, red. 

 coccineua (now Centro- 



pogon coccineus). 

 glandulosus, 3', Jy., st. 



per. herb, ro. 



Other Species : 

 amoenus (see villosulus). 

 bicolor (now Lobelia laxi- 



flora aiigustifolia'). 

 canus (see macropodus). 

 crenatifolius, 3', sum., 



grh. or st. shr., sc., yel. 

 fimbratus (see longe- 



pedunculatus). 

 giganteus, 14' to 16', Jy., 



st. per. herb, red, yel. 

 hamatus, (>', Je., grh. per. 



herb, vio. 

 lantanifolius, 3', Jy., st , 



pur. ; glabriusculus is a 



var. 

 longepedunculatus, 3', 



Jan., st. per. herb, pur. 



{syn. fimbriatus). 



SIPHONOPHORA. 



Aphides or Greenflies with very long honey tubes. 

 Kosse is destructive of Koses. Syringing with soapy. 

 or tobacco, water is the best remedy. 



SIREX. (WOOD WASP.) 



The larva; of this genus of Sawflies tunnel 

 in the wood of various Conifers, and frequently 

 do a considerable amount of damage. The 

 two best known British species are juvencus, 

 the Steel-blue Sirex, which prefers the Scotch 



Siphona.ndra (see Chioeooca). 

 Siphonamilia (see Clerodendron). 

 Siphonia (see Herea). 



humboldtianus, 3', sum., 



st. per. herb, sc., very 



showy. 

 manettiffiflorus, 1', Ap., 



st. sub-shr., red, yel. 



(*//. nitidus). 



mncropodus, 2' to 3', Je., 



st. per. herb, bl., red 



(*yn. canus). 

 microstoma, 2' to 3', Sep., 



st. sub-shr., sc. 

 nitidus of gardens (see 



mancttiaiflorus). 

 orbigyianus, 2' to 3', Jy., 



st. per. herb, yel., red. 

 penduliflorus, 2', Jy., st., 



sc. 



scandens, Jy., st. shr., sc. 

 surinamensis (now Con- 



tropogon surinamensis). 

 villosulus, 3', Je., grh., 



red, or. (syn. amoenus). 



