﻿Echium.l BOEAGiNE^ (Wright). 45 



South Africa : without locality, Villette! Wdllichl Harvey, 398. 



Coast Kegion : Cape Div. ; by roads adjacent to formerly cultivated fields 

 near Cape Town, 100 ft., Bolus, 4989! Herschel Lane, Claremont, Wolleij Bod, 

 1893 ! 



Also in South Europe, the Orient, North Africa, Canary Islands, and South 

 Temperate America. 



Introduced into South Africa. 



Order XCIII. CONVOLVITLACE^. 



(By J. G. Baker and C. H. Weight.) 



Calyx free, persistent ; sepals 5, equal or unequal, u?uilly distinct 

 down to the base. Coi^olla canapanulate or funnel-shaped, rarely 

 almost rotate, plicate in bud, entire or shortly lobed. Stamens 5, 

 inserted in the coroUa-tvibe opposite the sepals ; filaments filiform 

 or subulate ; anthers 2-celled, dorsifi-xed, linear or oblong, dehiscing 

 longitudinally. Ovary free, 1-4-celled, rarely with almost distinct 

 carpels ; ovules 2 (more rarely 1 or 4) in each cell ; style filiform, 

 simple or forked ; stigma capitate, dilated or linear. Fruit capsular 

 or indehiscent. Seeds as many as the ovules or fewer, glabrous, 

 villous or woolly ; albumen thin ; cotyledons usually broad and 

 much folded. 



Herbs or shrubs, frequently twining, rarely trees, in Cuscuta leafless parasites ; 

 leaves alternate, petioled, usually exstipulate ; flowers solitary or in peduncled 

 bracteate axillary cymes, various in size and colour, often sliowy. 



DiSTEiB. Genera 40, species about 1000, cosmopolitan. 



* Herbs or shrubs, not parasitic, with green leaves. 

 t Fruit an entire globose capsule. 



I. Ipomcea. — Ovary 2- or 4-celled, 4-07uled, rarely 3-celled, 6-ovnled ; style 

 simple; stigmas capitate; stamens included. 



II. Quamoclit.— Ovary 4-celled, 4-ovuled; style simple; stigmas capitate; 

 stamens exserted. 



III. Hewittia.— Ovary 1-celled, 4-ovuled; style simple ; stigmas ovate. 



IV. Astrochlaena.— Ovary 2-celled, 4-ovulod: style simple; stigmas linear- 

 oblong ; stem and leaves clothed with stellate hairs. 



V. Jacquemontia.— Ovary 2-ceIled, 4-ovuled; stjle simple; stigmas ovate- 

 oblong. 



VI. Convolvulus.— Ovary 2-ceIled, 4-ovuled ; style simple; stigmas linear or 

 filiform. 



VII. Evolvulus.— Ovary 2.celled, 4-ovuled ; style deeply twice-forked ; stigmas 

 club-shaped or filiform. 



VIII. Breweria.— Ovary 2-celled, 4-ovuled; style deeply forked; stigmas 

 capitate. 



tt Fruit deeply lobed. 



IX. Falkia.— Ovary 4-lobed; lobes 1-ovuled. 



X. Dichondra. Ovary 2-lobed ; lobes 2-ovuled, 



*» Leafless parasites. 



XI. Cuscuta.— Only South African £;cnus. 



