THE GENERA OF BRITISH FLOWERING PLANTS 215 



Order 47. Primilace.* 



27;. Hottonia. — Aquatic; leaves pectinate; 

 calyx 5-partile, hardly iiniled below; corolla 

 salver -shaped; stamens epipetalous; capsule 

 valvular. 



273. Primula. — Leaves radical; calyx tubular, 

 S-fid; corolla salver-shaped, tube cylindrical; 

 lobes spreading; stamens and styles dimorphic; 

 capsule 5-valved; seeds numerous. 



274. Cyclamen. — Leaves radical; caly.x bell- 

 shaped, 5-cleft; corolla bell-shaped; limb 5-par- 

 tite, rerte.\cd; stamens 5; capsule many-seeded. 



275. Lysimachia. — Leaves cauline; calyx 5-|)ar- 

 tile; corolla rotate, limb 5-partitc; stamens 5: 

 capsule 5-valvcd. 



276. Trientalis. — Leaves cauline; flowerswhitc; 

 calyx 7-partitc; corolla rotate; stamens 7; cap- 

 sule many-seeded. 



277. Glaux. — Leaves cauline; calyx bell-shaped, 

 coloured, 5-partite ; corolla none; stamens 5; cap- 

 sule with tew seeds. 



27S. Anagallis. — Calyx 5-partite; corolla rotate 

 or funnel-shaped; no tube; stamens 5; filaments 

 hairy; capsule opcninij transversely. 



279. Centimculus. — Calyx 4-partite ; corolla 

 tube inflated subtjlobose; filaments smooth; 

 stamens 4-5: capsules with many seeds. 



2S0. Samolus. — Leaves mainly radical; flowers 

 white; calyx 5-partite; corolla salver-shaped; 

 limb 5-partite; stamens 5; capsule half-inferior, 

 many-seeded. 



Order 48. OLEACt;^ 



281. Fraxinus. — Tree, deciduous; calj-.x o or 

 4-cIeft; corolla o, or of 4 petals; wanting- in this 

 country; plant polvjfamous; fruit winged (samara), 

 dry. 



282. LigTistrum. — Shrub, deciduous; calyx with 

 4 teeth ; corolla funnel-shaped, limb 4-cleft ; 

 stamens 2; fruit a fleshy berry, 2-seeded. 



Order 49. APOCYNACE^ 



283. Vinca. — Creeping shrub; calyx 4-partite; 

 corolla salver-shaped; tube 5-angled, long; fruit 

 of 2 follicles. 



Order 50. GenTIAN.\CE.« 



284. Microcala. — Leaves opposite; corolla 

 funnel-shaped, yellow; stamens 4; stigma i, 

 entire, peltate. 



285. Blackstonia (C///o/-a). — Leaves perfoliate; 

 calyx 8-partile; corolla yellow, rotate, 8-partite; 

 stamens 6-8; capsule i-celled. 



286. Centaurium (Erylhrira). — Calyx 4-5-fid : 

 corolla funnel-shaped; limb 4-5-fid; stamens 4-5; 

 anthers twisted; stigmas 2; capsule 2-celled. 



287. Cicendia (Exaaim). — Calyx 4-partite; 

 corolla salver-sh.'iped, limb 4-fid ; stamens 4; 

 anthers erect; stigmas 2; capsule i-2-cened. 



288. Gentiana. — Calyx 4-5-cleft; corolla funnel- 

 or salver-shaped; limb 4-5-cleft; stamens 4-5; 

 anthers erect; stigmas 2; capsule i-cellcd. 



289. Menyanthes. — Leaves trifoliate; flowers 

 whitish-pink; calyx 5-partite; corolla funnel- 



shaped, fleshy; stamens 5; stigma notched; cap- 

 sule 2-valved. 



290. Limnantheraum. — Leaves rounded; plant 

 aquatic, flDating; flowers yellow; calyx 5partite; 

 corolla rotate, limb s-partite; stamens 5; stigma 

 2-lobed; capsule i -celled. 



Order 51. Polemoniace.* 



291. Polemonium. — Calyx 5-fid; corolla rotate, 

 tube short; stamens 5; stigmas 3-fid ; capsule 

 3-celled. 



Order 52. BORAGINACE.E 



292. Omphalodes. — Radical leaves cordate ; 



flowers in raceme, blue. 



293. Cynoglossum. — Calyx 5-cleft; corolla 

 funnel-shaped; filaments very short; nutlets ovate, 

 with hooked bristles. 



294. Lappula (Echiiinspcrmu)ii). — Corolla with 

 tube, lobes rounded; style very short; fruit a nut- 

 let, wilh hniiki'd bristles. 



295. Symphytum. — Calyx 5-cleft; corolla tubu- 

 lar, bell-shaped, 5-toothed, tube short, straight; 

 anthers included; nutlets ovate. 



296. Borago. — Calyx 5-fid ; corolla rotate ; 

 anthers exserted, forming a cone; filaments 2-fid; 

 nutlets 4. 



297. Anchusa. — Calyx 5-fid; corolla funnel- 

 shaped, tube straight; stamens included; nutlets 

 depressed. 



298. Lycopsis. — Calyx 5-fid; corolla funnel- 

 shaped, tube curved; limb oblique. 



299. Pulmonaria. — Calyx tubular, 5-fid, tube 

 long; corolla regular, funnel-shaped, throat 

 naked; stamens included; styles simple; nutlets 

 attached by base. 



300. Asperugo. — Calyx 5-cleft, with smaller 

 teeth between, lobes leaf)'; corolla funnel-shaped, 

 scales in throat; filaments short; nutlets flattened, 

 granulate. 



301. Mertensia(/'«c«w«r/a). — Calyx s-fid, tube 

 short; corolla bell-shaped, tube with protuber- 

 ances; stamens exserted; nutlets flesh}', inflated. 



302. Myosotis. — Calyx 5-partite, tube long; 

 corolla salver-shaped, twisted in bud; limb 5-fid; 

 stamens included; nutlets smooth. 



303. Lithospermum. — Calyx 5-fid, short; corolla 

 regular, funnel-shaped; stamens included; nutlets 

 stony. 



304. Echium. — Caly.x 5-fid ; corolla irregular, 

 bell-shaped, throat naked, swollen; stamens ex- 

 serted; filaments unequal; style 2-fid; nutlets 

 wrinkled. 



Order 53. CoNVOLVULACE^ 



305. Calystegia ( Volvulus]. — Plant leafy ; 

 bracts 2, large, enclosing the calyx; stigma 

 broad. 



306. Convolvulus. — Bracts small, distant from 

 flower; corolla bell-shaped, plaited in bud; 

 style simple; stigmas 2; capsule 2-4-celled. 



307. Cuscuta. — Parasite, leafless; twining; 

 calyx 4-5-cleft; corolla bell-shaped, imbricate in 

 bud; stamens 4-5; styles 1-2; capsule opening 

 transversely. 



