164 RHINANTHACEAE. 



Family 11. RHINANTHACEAE. Figwort Family. 



Herbs, shrubs, or trees. Stems commonly terete. Leaves opposite or 

 wborled, or alternate : blades entire, toothed, or divided. Flowers perfect, 

 axillary, or spicate or racemose. Calyx regular or rarely 2-lipped, of 4 or 

 5 more or less united sepals. Corolla mostly irregular, of 4 or 5 partially 

 united petals. Androecium of 4, usually didynamous stamens, the fifth 

 one often represented by a staminodium, or of 2 stamens and 2 starainodia. 

 Gynoecium 2-carpellary. Ovary 1-celled. Fruit capsular or rarely baccate. 



Upper lip, or lobes, of the corolla external in the bud, or wanting. 

 Corolla with a spur or sac on the lower side. 

 Corolla-throat open : capsule 2-valved. 

 Corolla-throat closed by a palate : capsule opening by 

 a pore. 

 Corolla without either spur or sac. 



Filaments 5, 4 anther-bearing. 1 sterile and different 



from the others. 

 Filaments 2 or 4. 



Shrub : corolla elongate. 

 Herbs : corolla short. 



Anther-bearing filaments 4. 



Corolla nearly regular, about equally 5-lobed. 

 Corolla irregular, manifestly 2-lipped. 



Flowers peduncled : hypogynous dislj pres- 

 ent : leaf-blades palmately veined. 

 Flowers pedicelled : hypogynous disk 

 wanting : leaf -blades pinnately veined. 

 Anther-bearing filaments 2. 

 ' . Anther-sacs transverse, separated on a di- 



lated connective. 

 Anther-sacs vertical, contiguous. 

 Lower lip, or lobes, of the corolla external in the bud. 

 Sepals distinct or nearly so. 



Corolla campanulate ; lobes 5: leaves alternate. 

 Corolla rotate ; lobes 4 : leaves opposite. 

 Sepals partially united into a tube. 



Corolla campanulate, funnelform or tubular : capsule 

 not included in the calyx. 

 Stamens equal. 



Stamens unequal, didynamous. 

 Corolla salverform : capsule included in the calyx. 



1. ANGELONIA II. & B. Herbs or woody plants. Leaf -blades narrow, 

 shallowly toothed. Flowers in terminal racemes. Calyx-lobes 5, almost equal. 

 Corolla 2-lipped, the tube very short, saccate back of the lower lip, the throat 

 wide open. Stamens 4, included. 



1. A. angustifolia Benth. Plants 1-14 dm. tall, the stem or branches pubes- 

 cent: leaf-blades linear-spatulate to linear or nearly so, 3-11 cm. long, shal- 

 lowly toothed: flowers slender-pedicelled: calyx-lobes ovate, ciliate: corolla 

 about 2 cm. wide, spotted within. — Pinelands and cultivated grounds. Nat. of 

 Mex., and cultivated. — {Cuba, Ant.) 



2. ANTIRRHINUM [Tourn.] L. Erect herbs or vines. Leaf-blades 

 broad, entire. Flowers axillary, or in racemes or panicles. Calyx-lobes much 

 longer than the tube. Corolla 2-lippe(l, saccate at the base, the throat closed 

 by a palate. Capsules opening by subapical pores. 



1. A. antirrhiniflorum (Poir.) A. Hitchc. Vine: leaf -blades hastate. 1-4 cm. 

 long; petioles, and pedicels, often tendril-like: calyx-lobes linear to linear- 

 lanceolate, 10-15 nun. long: corolla purple or white, 15-25 mm. long: capsules 

 5-8 mm. in diameter. — Pinelands. Nat. of Texas, and cultivated. — (Ber., 

 Bah., Ant.) 



