THE GENERA OF BRITISH FLOWERING PLANTS 211 



1 28. Crataegus. Calyx-segments 5, acute ; 

 petals 5; styles 1-5; fruit a drupe, oval, with 1-5 

 long- stones, i-2-seeded. 



129. Cotoneaster. Calyx-segments 5; petals 

 5; styles 2-5; fruit a drupe, turbinate, with 3-5 

 half-exserted stones, not cohering at centre. 



Order 27. SAXIFRAGACE^ 



130. Saxifraga. Herbaceous plants; calyx 

 5-fid; petals 5; stamens 10; styles 2; ovary 

 2-celled; fruit a capsule. 



131. Chrysosplenium. Herbaceous plants; 

 calyx 4-fid; petals o; stamens 8-10; styles 2; 

 capsule i-celled, 2-beaked. 



132. Parnassia. Herbaceous plants; calyx 

 inferior, 5-cleft; petals 5; stamens 5, perigynous, 

 with 5 scales; stigmas 3-4; capsule i -celled. 



133. Ribes. Shrubs; calyx 5-cleft, superior; 

 petals 4-5; stamens 4-5; ovary i-celled; fruit a 

 berry, many-seeded, crowned with persistent 

 calyx. 



Order 28. CRASSULACE^E 



134. Tillaea. Leaves opposite; sepals, petals, 

 and stamens 3-4 ; no scales ; carpels 3-4, 2-seeded. 



135. Cotyledon. Leaves alternate; sepals 5; 

 petals 5, united below; stamens 10, inserted on 

 corolla; scales 5. 



136. Sedum. Leaves alternate; sepals and 

 petals 5; stamens 10-12; scales entire; carpels 

 5-6; seeds numerous. 



137. Sempervivum. Succulent; leaves alter- 

 nate; sepals 6-10; petals 6-20; stamens 12-40; 

 scales laciniate. 



Order 29. DROSERACE^: 



138. Drosera. Leaves glandular; sepals, petals, 

 and stamens 4-8; styles 3-5, 2-fid; capsule i- 

 celled, 3-5 ; seeds numerous. 



Order 30. HALORAGACE^: 



139. Hippuris. Aquatic; leaves in whorls, 

 entire; calyx 2-lobed, minute; petals o; stamen 

 i ; fruit a nut, i -celled. 



140. Myriophyllum. Aquatic, submerged; 

 calyx 4-fid; petals 2-4; stamens 8; styles 4; 

 fruit of 4 hard nuts. 



141. Callitriche. Aquatic mainly, floating; 

 leaves opposite, entire; perianth o; stamen i; 

 fruit of 4 lobes, not opening. 



Order 31. LYTHRACE^E 



142. Peplis. Calyx bell-shaped, with 12 teeth; 

 petals 6 or o; stamens 6 or 12; style short; capsule 

 2-celled. 



143. Lythrum. Calyx tubular, cylindrical, 

 teeth 8-12; petals 4-6, exceeding calyx-teeth; 

 style slender. 



Order 32. EPILOBIACE^ (ONAGRACE^) 



144. Epilobium. Flowers pink or red; calyx 

 4-cleft; petals 4; stamens 8; capsule 4-celled, 

 4-valved, 



145. Ludwigia. Plant floating; flowers small; 

 calyx 4-cleft; petals short, 4 or o; stamens 4; 

 stigma capitate; capsule obovate, 4-celled. 



146. CEnothera. Flowers yellow; calyx united 

 below; petals 4; stamens 8; seeds not bearded. 



147. Circaea. Flowers small, white; calyx 

 2-fid; petals 2; stamens 2; capsule i -2-celled, with 

 hooked bristles. 



Order 33. CUCURBITACEJE 



148. Bryonia. Plant dioecious; tendril climber; 

 calyx and corolla 5-toothed; stamens 5, in 3 

 bundles; style 3-fid; fruit a berry; seeds oval; 

 few. 



Order 34. UMBELLIFERJE 



149. Hydrocotyle. Stem creeping; leaves 

 peltate, simple; calyx small; petals entire; fruit 

 of 2 flat carpels with 5 ridges; vittae o. 



1 50. Eryngium. Leaves palmate, spinose ; 

 flowers in dense capitate umbels ; calyx of 5 leaf- 

 like teeth ; petals erect ; fruit covered with chaffy 

 scales. 



151. Astrantia. Leaves palmate; calyx of 5 

 teeth, leafy; bracts very large; coloured; petals 

 erect; fruit with 5 plaited, dentate ridges. 



152. Sanicula. Leaves palmate; calyx 5-fid; 

 petals with long inflexed point; fruit with hooked 

 spines. 



153. Danaa (Physospermum). Calyx with 5 

 teeth; petals obcordate; fruit bladdery; carpels 

 round, with 5 sharp ridges, 2 lateral within mar- 

 gin; vittae solitary, in furrows. 



154. Conium. Calyx small; petals obcordate, 

 point inflexed; carpels with 5 thick, wavy, scal- 

 loped ridges; vittae none or several. 



155. Smyrnium. Calyx none or small; petals 

 entire, elliptic ; fruit black, flat ; mericarps kidney- 

 shaped, with 3 prominent sharp ridges; vittae 

 many. 



156. Bupleurum. Leaves simple, entire; flowers 

 yellow; calyx small; petals round, entire; carpels 

 with winged ridge. 



157. Trinia (Apinella). Leaves compound; leaf- 

 lets linear; plant dioecious; petals entire, white; 

 involucre of few bracts or none. 



158. Apium. Leaves compound; flowers bi- 

 sexual, white; calyx o; petals entire; fruit ovoid; 

 carpels with 5 filiform ridges; vittae solitary. 



159. Cicuta. Calyx with 5 teeth, leafy; petals 

 obcordate; fruit didymous, with obscure ridges; 

 vittae solitary. 



1 60. Carum. Calyx small; petals notched; 

 base of style depressed; carpophore 2-partite; 

 ridges slender. 



161. Sison. Upper leaves pinnatifid; fruit flat, 

 with blunt ridges; vittae club-shaped, solitary. 



162. Falcaria. Petals notched; calyx margin 

 with 5 teeth; vittae solitary. 



163. Slum. Leaves all pinnate; calyx with 5 

 small teeth; petals obcordate; general and partial 

 involucral bracts numerous; carpels with 5 blunt 

 ridges; disk depressed or conical; vittae long, 

 several. 



