CUCURBITACEAE 1137 



loftg, usually puberulent : peduncle with a toothed scale at the end : hypanthium nearly 

 glabrous, campanulate, 2-3 mm. long, sepals oblong, about 6 ram. long : petals golden- 

 yellow, obovate, 1-1.5 cm. long, obtusish : berries elongated,^ 3-6 cm. long, orange, fleshy : 

 seeds ovoid or oval, 10-12 mm. long, flattened, the faces wrinkled. 



In sandy soil, Louisiana and Texas to Mexico. Also in the tropics and in subtropical countries. 



4. CITRULLUS Schrad. 



Annual or perennial odorous herbs, with prostrate stems and 2-3-branched rarely spine- 

 like tendrils. Leaf-blades 3-5-lobed, the lobes toothed or again lobed. Flowers monoe- 

 cious, solitary : staminate with 5 sepals, a large yellow corolla with 5 lobes, 3 stamens 

 whose filaments are very short ; anthers cohering, their connectives not produced beyond 

 the sacs : pistillate flowers with rudimentary stamens and a more or less elongated ovary : 

 style short : stigmas reniform : ovules numerous, horizontal. Berry globose or oblong, 

 many-seeded, very fleshy or rarely rather dry. Seeds flat, oblong or obovate. 



1. Citrullus CitruUus ( L. ) Small. Foliage pubescent with soft spreading hairs, 

 bright green. Stems stout, trailing, 1-4 m. long, angled, zigzag : leaf-blades ovate in out- 

 line, deeply 3-7-lobed, the lobes shallowly toothed or again lobed ; petioles about half as 

 long as the blades : hypanthium campanulate-turbinate, 5 mm. long : sepals linear or 

 nearly so, nearly as long as the tube, obtuse or acute : corolla rotate ; lobes ovate or obo- 

 vate, pale-yellow, rugose, ciliate with glandular hairs, villous Avithout, glandular within : 

 berries globose or oblong-cylindric, 1-6 dm. long, smooth, edible : seeds flat, oblong or 

 obovate, 1-2 cm. long, white or black. [(7. wttyam Schrad.] 



In waste places, Xorth Carolina to Florida and Texas. Watermelon. 



5. CUCUMIS L. 



Annual or perennial trailing or climbing herbs, with simple tendrils. Stems often 

 clothed with rough pubescence. Leaf-blades entire or 3-7-lobed, long-petioled. Flowers 

 monoecious : staminate clustered or rarely solitary ; hypanthium campanulate or turbinate ; 

 corolla yellow, of o more or less united petals ; stamens 3 ; filaments short, distinct ; con- 

 nective produced beyond the anther sacs. Pistillate flowers solitary : calyx and corolla like 

 those of the sterile : staminodia wanting. Ovary 1-celled, with 3-5 placentae : stigmas 

 obtuse. Ovules numerous, horizontal. Berry pulpy, with a soft rind, smooth or echinate. 

 Seeds numerous, flattened. 



Corolla less than 2 cm. broad : fruit prickly. 1. C. Anguria. 



Corolla over 3 cm. broad : fruit not prickly. 2. C. Mdo. 



1. Cucumis Anguria L. Stem slender, hispid, branched : leaf-blades mostly 5-8 cm. 



long, deeply 3-5-lobed, the lobes shallowly toothed : corolla 1-1.5 cm. broad : fruit oval to 



oblong, 3-6 cm. long. 



In thickets and waste places, Florida and Texas to tropical America. Bur Gherkin. West 

 Indian Gherkin. Gooseberry Gourd. 



2. Cucumis MMo L. Stem stout, somewhat hispid : leaf-blades larger than those of 



C. Anguria, merely toothed or shallowly lobed : corolla 3-5 cm. broad : fruit of various 



shapes, depressed or elongated, not prickly. 



In waste places and fields, more or less established in the Gulf States, and cultivated. Native of 

 Asia. Melon. Cantaloupe. Muskmelon. 



6. LAGENARIA Ser. 



Annual, musk-scented herbs, with clammy pubescent foliage. Stems climbing by 

 means of 2-branched tendrils. Leaf-blades toothed or 3-5-lobed, petioled : petioles with 

 2 glands at the top. Flowei-s monoecious, or rarely dioecious, solitary : staminate long- 

 pedicelled : hypanthium campanulate or funnelform ; sepals 5, spreading ; corolla white, 

 of 5 petals ; stamens borne on the hypanthium ; filaments distinct ; anthers lightly 

 cohering in a head. Pistillate flowers short-pedicelled : calyx and corolla like those of the 

 sterile flowers. Ovary variable in shape, 1-celled, with 5 placentae : style short : stigmas 

 3, 2-lobed. Ovules numerous, horizontal. Fruit very variable in shape, with a woody 

 rind and fleshy pulp. Seeds numerous, flattened. 



1. Lagenaria Lagenaria (L. ) Cockerell. A diffusely climbing vine, with finely 

 clammy pubescent and musk-scented foliage. Leaf -blades ovate to triaagular or orbicular- 



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