SCROPHULARIACE^. (fIGWORT FAMILY.) 287 



3. APHYLLON, Mitchell. 



Flowers solitarj', perfect. Calyx 5-cleft, bractless. Corolla tubular, curved, 

 nearly equally 5-lobed. Stamens included. Capsule 2-valved, with 4 equidistant 

 placentae. — Stemless or nearly so. Flowers purplish, on a long scape or peduncle. 



1. A. uniflorum, Torr. & Gray. — Stem very short and scaly; peduncles 

 1 - several, 3' - 5' high, pubescent ; calyx-lobes lanceolate-subulate. (Orobanche 

 uniflora, Z ) — AVoods, Florida, and northward. 



Order 91. SCROPHULARIACEiE. (Figwort Family.) 



Chiefly herbs. Leaves commonly opposite, -without stipules. Cal}x 

 4 _ 5-clefl or parted. Corolla 4 - 5-lobed, regular, or bilabiate ; the lobes 

 imbricated in the bud. Fertile stamens 4 (sometimes 2, rarely 5), mostly 

 didynamous, inserted on the tube of the corolla : anther-cells often se])a- 

 rate, opening lengthwise. Ovary free, 2-celled, many-ovuled. Placentas 

 central. Style simple or 2-cleft. Capsule 2-celled, many- (rarely 1-few-) 

 seeded. Seeds anatropous. Embryo small, in copious albumen. 



Synopsis. 



i 1. Upper lip of the corolla exterior in the bud (except Mimulus). Capsule commonly 



septicidally dehiscent. 



• Stamens 5, all perfect. Corolla regular. 



1. TERBASCUM. Corolla wheel-shaped. Filaments, or a part of them, bearded. Leaves 



alternate. 

 * « Fertile stamens 4 ; the fifth sterile or rudimentary. Flowers cymose. Leaves opposite. 



2. SCROPHULARIA. Fifth stamen scale-like. Corolla globose or oblong ; four of the lobes 



short and erect. 



3. CUELONE. Fifth stamen shorter than the others. Corolla tubular, inflated, contracted 



at the throat. Seeds winged. 



4. PENTSTEMON. Fifth stamen as long as the others. Corolla dilated upward. Seeds 



wingless. 



* * ♦ Fertile stamens 4 : sterile ones none. Flowers axillary or racemed. 



5. LINARIA. Corolla spurred at the base. Capsule toothed at the apex. 



6. MIMULUS. Calyx tubular, 5-angled, 6-toothed. Corolla large. 



7. HERPESTIS. Calyx 5 parted , the three outer lobes much larger. Corolla short. 



* « « * Fertile stamens 2 : sterile ones 2 or none. 



8. GRATIOLA. Calyx 5-parted. Sterile filaments entire, included. Capsule ovate or globose. 



9. ILYSANTHE3. Calyx 5-parted. Sterile filaments 2-cleft, exserted. Capsule oblong. 



10. MICRANTHEMUM. Calyx 4-parted A scale- like appendage below the filaments. 



^ 2. Upper lip of the corolla interior in the bud. Capsule commonly loculicidally dehiscent. 



« Corolla regular or slightly 2-lipped ; the lobes nearly equal. 



H- Stamens 2, distant. Capsule mostly obcordate. 



11. AMPHIANTHUS. Style 2-cleft. Flowers solitary, terminating the central scape and in 



the axils of the tufted radical leaves. 



12. VERONICA. Style simple. Flowers in leafy racemes or spikes. 



<- t- Stamens 4-6, equal. Peduncles axillary, 2 or more together. 



13. CAPRARIA. Corolla bell-shaped, 5-cleft. Capsule loculicidal. Leaves alternate. 



14. SCOPARIA. Corolla wheel-shaped, 4-cleft. Capsule septicidal. Leaves opposite or wborled 



