194 LOASACE^. (lOASA FAMILY.) 



* Seeds feic, ohlonrj, not wimjed ; petals 5, not large; Jilaments all jUlform. 



1. M. oligosperma, Nutt. Eough and adhesive (1-3° high), much 

 branched, the brittle l>ranches spreading ; leaA^es ovate and oblong, cut-toothed 

 or angled, often petioled ; flowers yellow (7-10" broad), opening in sunshine ; 

 petals wedge-oblong, pointed; stamens 20 or more; capsule small, about 9- 

 seeded. — Prairies and plains. 111. to Kan. and Col., south to Tex. 



* * Seeds numerous, rounded and win(j-viargined ; petals 10, large and showi/ ; 

 outer Jilaments petaloid in n. 3; capsule large, oblong ; leaves sessile. 



2. M. ornata, Torr. & Gray. Stout, 1-2° high ; leaves oblong-lanceolate, 

 deeply repand-toothed or pinnatifid, the segments acute ; calyx-tube leafy-brac- 

 teate; petals 2-3' long, yellowisK-white ; filaments all filiform or the outer 

 dilated below; capsule l|-2'long; seeds narrowly margined. — On the plains, 

 W. Dak. to central Kan. and Tex. 



3. M. nuda, Torr. & Gray. More slender, 1-5° high; leaves somewhat 

 lanceolate, rather bluntly pr shortly repand-dentate ; ^a/re?-s half as large as 

 in the last ; calyx not hracteate ; outer Jilaments nan^owhj dilated, sterile ; capsule 

 about V long ; seeds plainly icinged. — Plains of Dak. to central Kan. and Tex. 



Order 44. PASSIFLOKACE^E. (Passion-Flowek Family.) 



Herbs or woody plants, clnnhiiuj by tendrils, with perfect flowers, 5 mona- 

 delphous stamens, and a stalked 1-ceUed ovary Jree Jrom the calyx, icith 3 or 

 4 parietal placentce, and as many club-shaped styles. 



1. PASSIPLORA, L. Passiox-Floavek. 



Calvx of 5 sepals united at the base into a short cup, imbricated in the bud, 

 usually colored like the petals, at least Avithin ; the throat crowned Avith a double 

 or tri])le fringe. Petals 5, on the throat of the calyx. Stamens 5 ; filaments 

 united in a tube Avhich sheathes the long stalk of the ovary, separate above ; 

 anthers large, fixed by the middle. Berry (often edible) many-seeded ; the 

 anatropous albuminous seeds invested by a pulpy covering. Seed-coat brittle, 

 grooved. — Leaves alternate, generally palmately lobed, Avith stipules. Pedun- 

 cles axillary, jointed. Ours are perennial herbs. (An adaptation of ^os passi- 

 oriis, a translation oifior della passione, the popular Italian name early applied 

 to the floAver from a fancied resemblance of its parts to the implements of the 

 crucifixion.) 



1. P. lutea, L. Smooth, slender; leaves obtusely 3-lobed at the summit, the 

 lobes entire; petioles glandless; floAvers greenish-yeUoAV (1' broad) ; fruit Y in 

 diameter. — Damp thickets, S. Penn. to Fla., Avest to 111., Mo., and La. 



2. P. incarnata, L. Pubescent; leaves 3-5-cleft, the lobes serrate, the 

 base bearing 2 glands; floAA^er large (2' broad), nearly A\'hite, Avith a triple 

 purple and flesh-colored croAA-n ; involucre 3-leaA'ed ; fruit as large as a hen's 

 egg. — Dry soil, Va. to Fla., AA'est to Mo. aiid Ark. Fruit called maypops. 



Order 45. CUCUKBITACE..E. (Gourd Family.) 



Mostly succulent herbs with tendrils, dioecious or monoecious {often gamo- 

 petalous) Jlowers, the calyx-tube cohering with the 1 - 3-celled ovary, and the 



