1134 CUCURBIT ACEAE 



sparingly pubescent beneath, cordate at the base ; petiole about 2 as long as the blade, 



glabrous : peduncle 1-2 cm. long : pedicel 3-4 times longer than the peduncle, subtended 



by ovate or suljorbicular bracts : flowers glabrous : hypanthium yellowish green without : 



calyx abruptly bent and somewhat contracted into a neck above the inflation, the limb 



2-3 cm. broad, 3-lobed : capsules cylindric-prismatic, 5-6 cm. long. [A. Sipho L'Her.] 



In woods, Minnesota, south to Kansas, Pennsylvania and Georgia. Spring and summer. Dutch- 

 man's Pipe. 



Order 13. CAMPANULALES. 



Herbs, or rarely shrubs or trees. Leaves mainly alternate : blades simple, 

 entire, toothed or lobed. Flowers perfect, monoecious or dioecious, regular 

 or irregular. Hypanthium well developed, surrounding the ovary and adnate 

 to it. Calyx of usually 5 distinct or partially united sepals. Corolla of 5 or 

 rarely 6 distinct or usually partially equally or unequally united petals. An- 

 droecium of 3-5 stamens or rarely of only 1 stamen. Anthers distinct or some- 

 times connate. Gynoecium of 2-5 or rarely more united carpels. Ovary in- 

 ferior. Styles united. Fruit a capsule or a berry, sometimes a pepo. 

 Endosperm wanting : flowers monoecious or dioecious : plants mainly vines. 



Fam. 1. OUCURBITACEAE. 



Endosperm present : flowers perfect or mainly so. 



Corolla regular. Fam. 2. Campanulaceae. 



Corolla split on one side and otherwise more or less irregular. 



Stigma net indusiate : stamens united by either the anthers or fila- 

 ments or both. Fam. 3. Lobeliaceae. 

 Stigma indusiate : stamens distinct or rarely united by the anthers. Fam. 4. Brunoxiaceae. 



Family 1. CUCURBITACEAE B. Juss. Gourd Family. 



Annual or perennial succulent herbs, of great economic value, visually ti'ail- 

 ing, or climbing by means of tendrils. Leaves alternate : blades palmately nerved 

 or lobed, often pubescent with rough hairs. Inflorescence axillary, clustered, 

 panicled or racemose, only one flower in an axil. Flowers monoecious or dioe- 

 cious. Calyx of 4 or 5, rarely 6, more or less united sepals, adherent to the 

 ovary : lobes imbricated. Corolla of as many petals as the sepals, more or less 

 united and adherent to the calyx : lobes entire or fringed. Androecium of 3 

 stamens, then tw^o with 2-celled anthers and one with a 1-celled anther, or rarely 

 1, 2, 4 or 5 stamens. Filaments distinct or variously united. Anthers extrorse, 

 more or less contorted. Gynoecium a single compound pistil. Ovary rarely 

 1-celled, with 1 pendulous ovule, often 3-celled with many horizontal, anatropous 

 ovules in many series. Styles terminal, united. Stigmas thick, dilated or 

 fringed. Fruit a fleshy or dry berry (pepo). Seeds rarely solitary and pendu- 

 lous, usually numerous, flattened, horizontal. Endosperm wanting. Embryo 

 straight, with foliaceous nerved cotyledons. 



Ovary 1-eelled, with 3-5 placentae : ovules numerous or rarely few, commonly horizontal. 

 Anthers straight or merely curved. 



Disk at the base of thestyle annular or cup-like. 1. Melothkia. 



Disk at the base of the style wanting;or obsolete. 2. Ibervillea. 



Anthers contorted or conduplicate. 



Ovules or seeds numerous, horizontal. 



Corolla rotate, of 5 distinct or partially united petals. 

 Anthers distinct. 



Bottom of the calyx furnished with 2-3 scales. 3. Momordioa. 



Bottom of the calyx without scales. 



Connective not surpassing the anther-sacs : tendrils branched. 4. Citrullus. 



Connective produced beyond the anther-sacs : ^tendrils simple. 5. Cucumis. 



Anthers cohering in a head. 6. Lagenaria. 



Corolla campanulate. 7. Cucurbita. 



Ovules or seeds 1-4 in each cavity, erect or ascending. 8. Cayaponia. 



Ovary 1-several-celled : ovules solitary or few, erect, ascending or pendulous. 

 Ovary usuallv 2-3-celled : ovules few. erect or ascending. 



Stamens 2-3 : leaf-blades lobed : fruit symmetrical, opening at the top. 9. Micrampeles. 



Stamens united into a single column : leaf-blades comi)ound : fruit oblique, 



elastically bursting. 10. Cyclanthera. 



Ovary 1-celIed : ovule solitary, pendulous. 11. Sicyos. 



1. MELOTHRIA L. 



Herbs, with slender trailing or climbing stems. Leaf-blades entire, lobed or palmately 

 divided: petioles furni.shed with simi)le tendrils at tiie axils. Flowers monoecious or 



