808 LOASACEAE 



rounded or subcordate at the base, eciliate : petioles 4-10 mm. long, each with 2 glands 

 near the top : peduncles slightly longer than the petioles, commonly in pairs : involucre 

 wanting : calyx 10-14 mm, broad : sepals linear-oblong : corolla wanting : crown -filaments 

 few, shorter than the sepals : berries ovoid or subglobose, 8-10 mm. long. 

 In sand, southern peninsular Florida and the Keys. Also in the West Indies., 



8. Passiflora angustif olia Sw. A bushy vine 3-7 dm. tall, with glabrous foliage. 

 Leaf-blades mostly 3-lobed, narrowly oblong, lanceolate or linear, 2-10 cm. long, acute or 

 apiculate, the middle lobe longest ; petioles 1-6 mm. long, each with 2 glands near the top : 

 peduncles surpassing the petioles, often in pairs : involucre wanting : calyx yellowish, 7-12 

 mm. broad : sepals linear or linear-lanceolate : corolla wanting : crown-filaments in 2 rows : 

 berries subglobose, \5-8 mm. in diameter. 



In sand, southern peninsular Florida and the Keys. Also in the West Indies. 



9. Passiflora tenuiloba Engelm. A slender bushy or somewhat climbing vine, with 

 glabrous or nearly glabrous foliage. Leaf-blades curious, usually less than 2 cm. long, 

 8-15 cm. broad ; petioles shorter than the usually 3-lobed or entire middle lobe, each with 

 2 glands, the lateral lobes spreading or recurving, rather prominently nerved, linear, 

 entire, or with 1 or few spreading teeth or lobes, slightly revolute : peduncles slightly 

 longer than the petioles : involucre wanting : sepals oblong, 8-10 mm. long, obtuse, green : 

 corolla wanting : berries subglobose, 1-1.5 mm. in diameter. 



In dry soil or on hillsides, Texas to New Mexico and adjacent Mexico. Spring to fall. 



10. Passiflora Bigelovii Small. A slender climbing vine, with glabrous foliage. 

 Leaf-blades as long as broad or nearly so, 2-8 cm. broad, reticulated at maturity, deeply 

 3-lobed, the middle lobe often cuneate, 3-lobed, the lateral lobes unequally once or twice 

 lobed, all segments usually bristle-tipped ; petioles 2-6 mm. long, each with 2 glands at 

 the top : peduncles surpassing the petioles : involucre wanting : sepals oblong, 1 cm. 

 long, obtuse : corolla wanting : filaments of the crown shorter than the sepals : berries 

 subglobose, about 1 cm. in diameter. 



In sandy or rocky soil, Texas. Spring to fall. 



11. Passiflora multiflora L. A high-climbing vine, with velvety pubescence. 

 Leaf-blades leathery, oblong or slightly broadest below the middle, 5-12 cm. long, apicu- 

 late, entire, more or less prominently rugose beneath, rounded or subcordate at the base ; 

 petioles 5-12 mm. long, each with 2 glands near the top : peduncles 5-15 mm. long, clustered 

 in the axils : involucre none : sepals oblong or oblong-lanceolate, 5-6 mm. long : petals 

 linear or nearly so, delicate : berries subglobose, 6-8 mm. in diameter. 



On prairies or mountain slopes, southern Texas. Summer and fall. 



Order 22. OPUNTIALES. 



Succulent herbs, shrubs or trees, armed with spines, leafless or essentially so, 

 or rigid leafy herbs, furnished with more or less specialized hairs. Flowers per- 

 fect, solitary or cymose. Hypanthium present. Calyx of 4 or 5, or many sepals 

 surmounting the hypanthium. Corolla of 4 or 5, or many petals. Androecium 

 of usually numerous stamens in several series or collected into groups and par- 

 tially reduced to staminodia. Gynoecium of 4 or 2-several united carpels. 

 Ovary inferior, 1-celled, with 4 or several parietal placentae. Ovules numerous. 

 Fruit baccate or capsular. 



Sepals and petals 4 or 5 each, very different : leaves entire or dissected : erect or climbing plants, with 

 rigid hairs. Fam. 1. LOASACEAE. 



Sepals and petals nearly alike, at least the latter numerous : leaves typically 



mere scales or wanting : succulent plants, usually armed with spines. Fam. 2. OPUNTIACEAE. 



FAMILY 1. LOASACEAE Reichenb. LOASA FAMILY. 



Herbs or rarely shrubs, with erect trailing or climbing stems, the foliage 

 often pubescent with rigid hairs. Leaves opposite or alternate, without stipules : 

 blades entire, lobed or pinnatifid. Flowers perfect, regular, variously disposed, 

 often opposite the leaves. Hypanthium straight or spirally twisted. Sepals 

 4-5, imbricated or convolute, often persistent. Corolla white, yellow or red. 

 Petals 4-5, sessile, or with claws. Androecium of numerous stamens or rarely of 

 only 5. Filaments filiform, sometimes collected into groups, often accompanied 



