AN ENCYCLOPEDIA OF HORTICULTURE. 



333 



Cistns continued. 



C.rotundifolius (round-leaved).* fl., petals purple, with a yellow 

 mark at the base of each, imbricate ; sepals cordate, pilose ; 

 peduncles very hairy, rather cymose. June to September. I. 

 roundish-ovate, obtuse, flat, wrinkled, reticulately veined, clothed 

 on both sides with fascicled hairs ; petioles furrowed, somewhat 

 sheathing at the base. h. 1ft. South Europe, 1640. (S. C. 75.) 



C. salvifolius (Sage-leaved), ft. white, middle-sized ; peduncles 

 long, white from tomentum, one-flowered, articulated above, 

 solitary or tern. June to August. I. stalked, ovate, obtuse, 

 wrinkled ; under surface tomentose. h. 2ft. South Europe, 1548. 

 (S. C. 54.) There are many varieties of this species. 



C.8. Corbariensis (Corbar).* /., petals white, imbricate ; pedun- 

 cles long, one to five-flowered. May. I. stalked, somewhat 

 cordate, ovate, acuminated, with fringed margins, wrinkled on 

 both surfaces, and very glutinous, h. 2ft. South of France, 1656. 

 A hybrid between salvifolius and populifolius. (S. C. 8.) 



C. undulatus (waved). A synonym of C. wllosus. 



C. vaginatus (sheathed).* fl. rich rose ; petals imbricate ; pedun- 

 cles three-flowered, axillary or terminal, long, bracteate at the 

 base. April to June. I. lanceolate, acute, three-nerved, hairy ; 

 under surface reticulated ; footstalks furrowed, dilated, and 

 sheathing at the base, with pilose margins, h. 2ft. Teneriffe, 

 1779. (S C.9.) 



C. villosus (villose).* fl., petals large, reddish-purple, spreading, 

 imbricate at the base; peduncles one-flowered, one or three 

 together. June. I. roundish-ovate, wrinkled, tomentose and 

 hairy, stalked ; footstalks furrowed, connate at the base. h. 3ft. 

 South Europe, 1596. SYNS. C. incanus and C. undulatus. (S. C. 35.) 



Citrullus continued. 



in diameter, sometimes much smaller, sweet or bitter. I. deeply 

 divided, or but moderately lobed, glabrous or somewhat hairy, 



FIG. 459. WATER MELON (CITRULLUS VULOARIS). 

 hardly scabrid. India. " Said to be annual, while C. Colocynthit 

 is perennial ; but the distinction between the cultivated form of 

 C. Coloeynthis and the divided-leaved forms of the Water Melon. 



FIG. 458. CITRULLUS VULOARIS, showing Habit of Plant, and (a) Male and (6) Female Blossoms. 



C. v. canescens (hoary).* fl., petals 



purple, tinged with blue, and with 

 each ; sepals clothed with i 



crenulated, of a darkish- 

 yellow spot at the base of 



civuii , nepaja uiumou wmi starry pubescence ; peduncles terminal, 

 one-flowered, or somewhat cymose. May. I. oblong-linear, bluntish, 

 tomentose, hoary, waved, rather three-nerved, sessile, and some- 

 what connate at the base. A. 2ft. South Europe. (S. C. 45.) 

 CITHAREXYLUM (from kithara, a lyre, and xylon, 

 wood ; in reference to the fitness of the wood for musical 

 instruments). Fiddle-wood. Including Rauwolfia (of Euiz 

 and Pavon). ORD. Verbenacece. A genus of about a score 

 rather ornamental stove evergreen trees. Probably very 

 few are now grown. They have principally white flowers, 

 and in height range from 6ft. to 50ft. Some of the species 

 which have been introduced are : caudatum, cyanocarpum, 

 dentatum, quadrangulare, subserratum, and villosum. 

 CITRON. See Citrus medica. 



CITRULLUS (from Citrus, in allusion to the Orange- 

 like fruits). ORD. Cucurbitacce. A small genus of stove 

 herbs, closely allied to Cucumis. Flowers unisexual, with 

 a persistent five-parted calyx and corolla. Fruit a many- 

 seeded gourd. For culture, &c., see Cnctunis. 

 C. Colocynthis (Colocynth, the classical name of the plant). 

 Bitter Apple ; Bitter Cucumber, fl. light yellow, solitary, fr. 

 globose, rarely Sin. in diameter, intensely bitter, smooth, vane 

 gated green and white. I. deeply divided, 2*in. by scarcely 2m 

 ovate ; middle segment compound-pinnatifld. Whole plant scabnd. 

 India. Perennial. (B. M. PI. 114.) SYN. Cucumw Colocynthis. 

 C. vulgarl* (common).* Water Melon, ft. yellow. Jr. often lOin. 



is very small." SY.NS. Cucuww 

 Figs. 458 and 459. 



nd Cucurbits CUruUm See 



Fio. 460. FRUITING BRANCH OF SWEET ORANGE (CITRUS AURANTIUM). 



