194 LOASACE^E. (LOASA FAMILY.) 



* Seeds few, oblong, not winged ; petals 5, not large ; filaments all filiform. 



1. M. oligosperma, Nutt. Rough aud adhesive (1-3 high), much 

 branched, the brittle branches spreading ; leaves ovate and oblong, cnt-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 winy-margined ; petals 10, large and showy ; 

 outer filaments 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, yellowish-white ; filaments all filiform or the outer 

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

 W. Dak. to central Kan. and Tex. 



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

 lanceolate, rather bluntly or shortly repand-dentate ; flowers half as large as 

 in the last; calyx not bracteate; outer filaments narrowly dilated, sterile; capsule 

 about \' long ; seeds plainly winged. Plains of Dak. to central Kan. and Tex. 



ORDER 44. PASSIFLOKACEJE. (PASSION-FLOWER FAMILY.) 



Herbs or woody plants, cliinbiny by tendrils, with perfect floicers, 5 mona- 

 delphous stamens, anil a stalked I-celled ovary free from the calyx, with 3 or 

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



1. PASSIFLORA, L. PASSION-FLOWER. 



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

 usually colored like the petals, at least within ; the throat crowned with a double 

 or triple fringe. Petals 5, on the throat of the calyx. Stamens 5 ; filaments 

 united in a tube which 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, with stipules. Pedun- 

 cles axillary, jointed. Ours are perennial herbs. (An adaptation oiftos passi- 

 onis, a translation oifior delta passione, the popular Italian name early applied 

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

 crucifixion.) 



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

 lobes entire ; petioles glandless; flowers greenish-yellow (!' broad) ; fruit ' in 

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



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

 base bearing 2 glands; flower large (2' broad), nearly white, with a triple 

 purple and flesh-colored crown ; involucre 3-leaved ; fruit as large as a hen's 

 egg. Dry soil, Va. to Fla., west to Mo. and Ark. Fruit called maypops. 



ORDER 45. CUCURBITACE^. (GOURD FAMILY.) 



Mostly succulent herbs with tendrils, dicccious or monoecious (often yamo- 

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



