THE GENERA OF BRITISH FLOWERING PLANTS 217 



343. Marrubium. — Calyx tubular, teeth sub- 

 equal; upiier lip o!" corolla straiifht, erect, flat, 

 lower 3-Iobed ; 2 lower stamens loiii;'est ; jiuther- 

 cells spreadintj; nutlets flatl\' truncate. 



344. Stachys. — Calyx tubular, bell-shaped, 

 teeth 10, equal; upper lip of corolla hollow; lower 

 lip with lateral lobes rcflexed ; anthers smooth; 

 nutlets smooth. 



345. Galeopsis. — Calyx-teeth 5, spinous; calyx 

 tubular, bell-shaped ; upper Up of corolla arched, 

 lower 3-lobed, with 2 teeth on upper side; anthers 

 ciliate; nuts llaltened. 



346. Leonurus. — Calyx-teeth 5, spinous; calyx 

 tubular, spinous; upper lip of corolla nearly flat, 

 lower 3-lobed ; lobes blunt ; anthers smooth ; nut- 

 lets 3-sided, truncate. 



347. Lamium (and Galeobdolo)i). — Ci\\yx bell- 

 shaped, !o-ribbed; upper lip of corolla arched; 

 lower lip entire, with 1-2 teeth each side; anthers 

 liairy; nutlets 3-sided. 



348. Ballota. — Calyx funnel-shaped, 10-ribbed; 

 upper lip of corolla hollow, erect ; lower lip 3-fid, 

 middle lobe largest ; anthers smooth ; nutlets 

 blunt. 



349. Teucrium. — Calyx tubular, 5-toothed; 

 upper lip of corolla 2-partite; nutlets united. 



350. Ajuga. — Calyx ovate, bell-shaped, 5-cleft; 

 corolla with short upper lip, entire or notched. 



Order 60. PlantaGINACE.?! 



351. Plantago. — Plant terrestrial; flowers bi- 

 sexual; caly.X4cleft ; corolla-tube ovoid, 4-partite; 

 stamens epipetalous; capsule openings trans- 

 versely. 



352. Littorella. — Plant aquatic; monoecious; 

 male flowers stalked ; sepals 4; corolla-tube cylin- 

 drical ; limb 4-partite; stamens hypogynous; 

 female flowers sessile; sepals 3; style long; cap- 

 sule I -seeded. 



Order 61. Illecebrace.e 



353. Illecebrum. — Leaves opposite ; sepals 

 white, concave, long-pointed ; no petals or small 

 scales. 



354. Herniaria. — Leaves opposite, not united 

 below; sepals green, blunt; petals slender; stig- 

 mas 2 ; no style. 



355. Corrigiola. — Leaves alternate; petals 5, 

 as long as sepals, oblong; stigmas 3. 



356. Scleranthus. — Leaves opposite, filiform, 

 united below; sepals and petals 5; stamens 10; 

 stigmas 2. 



Order 62. Amaranthace^ 



357. Amaranthus. — Plant monoecious; perianth 

 3-5-partite; stamens 3-5; stigmas 3; capsule 

 I -celled, I -seeded. 



Order 63. Chenopodiace.*: 



358. Chenopodium. — Flowers bisexual ; no 

 bracts; perianth 3-5-partite; stamens 5; stigmas 

 2-3; utricle membranous; pericarp free; testa 

 crustaccous. 



359. Beta. — Perianth 5-partite; stamens 5; 

 styles 2-3; utricle striate, hard above; pericarp 

 adhering to perianth; testa thin. 



360. Atriplex (and Obioiic). — Plant monoecious; 

 stem leafy; male flowers 3-5 sepals; stamens 5; 

 style o; female 2 sepals; perianth flattened; 

 stamens o; stigmas 2; pericarp membranous; 

 test^i ci'ustaceous. 



361. Salicornia. — Flowers bisexual; stem leaf- 

 less, jointed ; perianth flesh)' ; stamens 1-2; st}'le 

 short; stigma 2-fid; pericarp membranous. 



362. Suaeda (Dondia) (Lerchin). — Stem leafy; 

 leaves not spinous, ^-cylindrical ; perianth 5-par- 

 tite ; not appcndaged ; stamens 5; stigmas 2-3; 

 pericarp membranous; testa crustaceous. 



363. Salsola. — Stem leafy; leaves spinous; 

 perianth 5-partite, segments appendagcd, trans- 

 versely winged in fruit; stamens 5; styles 2; 

 pericarp membranous. 



Order 64. POLYGONACE^ 



364. Polygonum. — Flowers in raceme; perianth 

 5-partite, segments sub-equal; stamens 5-S ; 

 styles 2-T,\ fruit compressed, 3-angled, wingless. 



365. Fagopyrum. — Flowers cymose; perianth 

 5-partite; stamens 8; styles 3; nut 3-angled; 

 cotyledons large, Icaly, twisted plicate. 



366. Rumex. — Perianth 6-partite, 3 inner seg- 

 ments longer; stamens 6, in pairs; styles 3; fruit 

 3-angled. 



367. Oxyria. — Perianth 4-partite, 2 inner seg- 

 ments large; stamens 6; stigmas 2, multifid; nut 

 flattened, winged. 



Order 65. Aristolochiace^ 

 36S. Asarum. — Herbaceous; perianth bell- 

 shaped, 3-cleft ; stamens i2; stigma 6-lobed ; cap- 

 sule 6. celled. 



369. Aristolochia. — Stem erect; perianth tubu- 

 lar, swollen below, mouth oblique; stamens 6; 

 style columnar; stigma 6-lobed; capsule 6-celled. 



Order 66. Thymel/EACE^ 



370. Daphne. — Shrub, perianth 4-partite, deci- 

 duous; stamens 8, in 2 row's; fruit a berry, fleshy, 

 1 -seeded. 



Order 67. El^agnace^ 



371. Hippophae. — Shrub, spinose; plant dioe- 

 cious; male flowers in catkin, scales ovate, 

 perianth of 2 leaves; stamens 4; female flowers 

 solitary; [jerianth tubuUir; sl}le short; nut 

 1 -seeded. 



Order 68. Loranthace.e 



372. Viscum. — Hemi-parasite, on trees, yel- 

 lowish-green ; plant dioecious ; perianth fleshy, 

 4-partite; anthers opening by pores; stigma 

 sessile; berry i-sceded, white. 



Order 69. Santalace.^ 



373. Thesium. — Hemi-parasite on roots, green; 

 plant prostrate; leaves linear; perianth 4-5-cleft 

 funnel-shaped; st.amens 5 ; style i; nut drupe-like. 



Order 70. Eui'lIORBIACE.-E 



374. Euphorbia. — Plant monoecious; stem wilh 

 milky juice ; involucre calyciform, several m;de 

 flowers (monandrous) surrounding i female. 



