460 A FLORA OF MANILA 



months. India to Japan, southward to Australia and Polynesia, probably 

 a native of tropical Asia; of prehistoric introduction in the Philippines. 



7. CITRULLUS Schrader 



Annual, hispid or scabrous vines. Leaves palmately 3- to 7-lobed, the 

 segments narrowly sinuate-pinnatifid. Flowers monoecious, yellow, soli- 

 tary. Calyx-tube campanulate, 5-lobed. Corolla broadly campanulate or 

 rotate, deeply 5-parted. Male flowers with 3 stamens, the anthers nearly 

 free, one 1-celled, two 2-celled. Female flowers with an ovoid ovary; style 

 short; stigmas 3, reniform. Fruit large, ellipsoid, smooth, fleshy, indehis- 

 cent. Seeds oblong, compressed, smooth, 'black. (From the Latin name of 

 the citron-tree from fancied. resemblance of the fruits.) 



Species 2, widely cultivated, 1 introduced and cultivated in the Phil- 

 ippines. 



* 1. C. VULGARIS (L.) Schrad. Sandia (Sp.) ; Watermelon. 



A spreading, hairy, tendril-bearing, annual vine, reaching a length of 

 several meters. Leaves petioled, in outline oblong-ovate, 8 to 20 cm long, 

 deeply 3- to 7-lobed, the lobes pinnatifid, the segments usually narrow. 

 Flowers monoecious, axillary, solitary, yellow, about 2 cm in diameter. 

 Fruit very large, edible, smooth, green mottled with gray, ellipsoid to oblong, 

 ift local varieties up to 30 cm in length. 



Frequently cultivated in the Philippines, occasional in our area, fl. Dec- 

 March, and probably in other months. Cultivated in all warm countries, 

 a native of tropical Africa. 



8. CUCUMIS Linnaeus 



Climbing, hispid or scabrous, monoecious, annual vines. Leaves palm- 

 ately 3- to 7-lobed or angled. Flowers yellow, shortly peduncled, the males 

 clustered, the females solitary. Calyx-tube obconic or campanulate, 5- 

 lobed. Corolla campanulate, deeply 5-lobed. Male flowers with 3 stamens, 

 the anther-cells conduplicate or flexuose, connective produced in a crest. 

 Female flowers with an ovoid to oblong ovary; style short; stigmas 3, 

 obtuse. Fruit fleshy, indehiscent, cylindric, smooth or tuberculate. (Latin * 

 name of the cucumber.) 



Species about 26, mostly ift tropical Africa, others in tropical Asia, 

 Australia, and America, a few of uncertain origin, 2 introduced in the 

 Philippines. 



Fruit glabrous 1. c. melo 



Fruit more or less tuberculate 2. C. sativua 



* 1. C. MELO L. Melon (Sp.) ; Melon. 



A spreading, annual, more or less hispid or villous vine. Leaves subor- 

 bicular, 6 to 15 cm long, deeply cordate, angular, shallowly 3- to 7-lobed, 

 or only repand and denticulate. Flowers yellow, 1.5 to 2 cm long. Calyx- 

 tube densely villous. Fruit usually ellipsoid, smooth, green, longitudinally 

 stripped or mottled, 20 cm long or less. 



Cutivated, fl. March-May. A native of tropical Asia or Africa, now 

 cultivated in all warm countries. 



* 2. C. SATivus L. Pepino (Sp.) ; Cucumber. 



An annual, rather coarse, prostrate or climbing vine. Leaves ovate 

 8 to 14 cm long, 5-angled or 5-lobed, the lobes or angles acute, hispidulous 

 on both surfaces. Flowers axillary, solitary or fascicled, sessile or short- 



