: 7 6 CONVALLARIA 



two green 1. annually. The fls. are homogamous and fert. themselves 

 in absence of insects. Cult. orn. fl. 

 Convallariaceae (Warming) = Liliaceae ( vi xi). 

 Convolute (aestivation), cf. Aestivation. 



Convolvulaceae (EP., BH. incl. Nolanaceae). Dicots. (Sympet. Tubi- 

 florac ; Polemoniales BH.}. 40 gen., iooosp., trop. and temp , many 

 annual herbs, others shrubs or (rarely) trees; several thorny xero., 

 many climbing herbs or lianes, and one (Cuscuta) a climbing parasite. 

 Some have tuberous roots (e.g. Ipomoea Batatas), other rhiz. or 

 tuberous stems ; latex often present. L. alt., usu. petiolate, rarely 

 with stips. Accessory buds often found in the leaf-axils. Infl. 

 dich. with tendency to cincinnus or bostryx ; br. and bracteoles 

 present. 



Fl. 5, reg., hypog., usu. 5-merous. K usu. polysepalous, imbr., 

 the odd sep. post.; C sympet., of various shapes, usu. induplicate- 

 valvate, sometimes conv. ; A 5, alt. with pets., epipet., on base of C, 

 with usu. intr. anthers; G on a honey-secreting disc, (2), rarely 

 (3 si), with axile plac. ; ov. 2 in each loc. (rarely 4), erect, anatr. 

 or semi-anatr., the micropyle facing out \vards and downwards; one 

 integument. Berry, nut or caps. ; endosp. 



Fls. usu. large, brightly coloured. Extra-floral nectaries in many 

 on the petiole. Few of economic value exc. for handsome fls. (see 

 Ipomoea). 



The C. are closely related to Solanaceae, Boraginaceae and other 

 Tubiflorae. See Nat. Pfi. and esp. note by Engler at p. i of art. C- 

 [BH. cnars. incl. 1. sometimes paired in infl.; G (2 5), or 5, divided 

 by irreg. longitudinal constrictions ; fr. of nutlets.] 

 Classification and chief genera : 



I. CONVOLVULOIDEAE (independent green pi.): Di- 

 chondra, Evolvulus, Porana, Ipomoea, Convolvulus, 

 Argyreia. 

 II. CUSCUTO1DEAE (leafless parasites) ; embryo without 



cotyledons) : Cuscuta (only genus). 



Convolvulus (Tourn.) L. Convolvulaceae (i). 180 chiefly temp. 

 C. arvcnsis L. Brit, (bindweed) has sweetly scented fls. which are 

 much more often visited by insects than the large but scentless fls. 

 of Calystcgia sepium. Smaller fls. with short sta. appear on some 

 stocks ; these appear to be due to the action of a fungus (cf. Lychnis 

 and see Beth. z. Bot. Centr., 1893, p. 447). The root produces adv. 

 stem buds, by which veg. repr. takes place. From incisions made in 

 the rhiz. of C. scammonia L. a resinous juice flows, used as a purgative 

 (scammony). Some yield rosewood oil. Cult. orn. fl. 

 Convolvulus, Calystegia, Convolvulus. 

 Conyza L. Compositae (3). 60 temp, and subtrop. 

 Conzattia Rose. Leguminosae (II. 7). i Mexico. 

 Cooba (Austr.), Acacia salicina Lindl. 

 Cookia Sonner. = Clausena Burm. f. (Rutac.). 

 Coondi. Carapa. 



Cooperia Herb. Amaryllid. (i). 2 Mex., Texas (evening star). 

 Copaiba Adans. =Copaifera L. (Legum.). 

 Copaifera L. Leguminosae (n. 2). 25 trop. Am., Afr. Several 



