EHINANTHACEAE. 



257 



Leaf-blades palmately veined and palmately lobed. 2. Cymbalahia. 



Leaf-blades pinnately veined and entii'e. 3. Linaria. 



Corolla-tube with neither spur nor sac. 



Filaments 5, 4 anther-bearing, 1 sterile (staminodium) 

 and different from the others. 

 Staminodium a scale, adnate to the upper side of 

 the corolla-tube : corolla short, with 4 erect lobes. 

 Staminodium elongate : corolla long. 



Filaments longer than the staminodium : seeds 



winged. 

 Filaments shorter than the staminodium : seeds 

 wingless. 

 Filaments 2 or 4. 



Trees : flowers large, in large panicles : corolla 



decurved. 

 Herbs : flowers small, not in panicles : corolla not 

 decurved. 

 Anther-bearing filaments 4, or rarely .*$. 

 Anther-bearing filaments 2. 



Filaments short and stout, or almost 



wanting. 

 Filaments elongate and slender. 

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

 Sepals distinct or essentially so. 



Corolla rotate or campanulate : stamens not surpassing 



the corolla-lobes. 

 Corolla tubular and somewhat salverform : stamens 

 exserted. 

 Sepals almost wholly, or only partially, united into a tube. 

 Corolla various, but only slightly 2-lipped : stamens not 

 ascending under the upper lip. 

 Corolla fuunelform : capsule exserted. 



Anther-sacs awned at the base : corolla yellow. 13. Dasystoma. 

 Anther-sacs awnless : corolla rose-purple, pink, or 

 white. 14. 



Corolla salverform : capsule mostly in the calyx. 15. 



Corolla strongly 2-lipped : stamens ascending under the 

 upper lip. 



Anther-sacs unlike, the Inner pendulous. 16. Castilleja. 



Anther-sacs alike, parallel. 



Ovules 1-2 in each cavity of the ovary : capsules 



1-4-seeded. 17. 



Ovules several to many in each cavity : capsules 

 many-seeded. IS. 



Agalinis. 

 buchnera. 



Melampyrcm. 

 Pedicularis. 



1. VESBASCUM [Tourii.] L. Annual, biennial, or perennial herbs. 

 Leaf- blades entire, toothed, or pinnatifid, sometimes decurrent. Flowers in 

 spikes, racemes, or panicles. Calyx-lobes 5. Corolla slightly irregular: lobes 

 longer than the tube, the lower lobes larger than the upper. Stamens 5, ex- 

 serted. Style declined. Capsule oblong to subglobose. — Sum. and fall. — 

 Mullen. 



Stem glabrous or mostly glandular above : racemes interrupted : 



or depressed. 

 Stem densely pubescent : racemes continuous, at least above : 

 capsule ovoid or oblong. 

 Stem angled : leaf-blades crenate : capsules 4-6 mm. long. 

 Stem winged : leaf-blades entire : capsules 7-10 mm. long. 



capsule subglobose 

 1. V. Blatturia. 



2. r. Li/chnitis. 



3. V. Thapsiis. 



1. V. Blattaria L. Stems 4-12 dm. tall, sometimes glandular above: leaf- 

 blades oblong to ovate, 2-12 cm. long, doubly serrate-crenate : pedicels glan- 

 dular: calyx-lobes linear to linear-elliptic, 4.5-6.5 mm. long: corolla white or 

 yellow, 3-4 cm. wide : capsule globose or depressed, 6-8 mm. in diameter. — 

 Common, in old fields and on roadsides. Nat. of Eu. — Moth-mullex. 



2. V. Lychnitis L. Stems 8-20 dm. tall, tomentose with short hairs: leaf- 

 blades narrowly elliptic or elliptic-lanceolate on the lower part of the stem, 

 elliptic or lanceolate above, crenate: pedicels tomentulose: calj'x-lobes lanceo- 

 late to linear-lanceolate, 2.5-3.5 mm. long: corolla yellow; longer lobe 4-6 mm. 

 long: capsules oblong or ovoid-oblong, 4-6 mm. long, much exceeding the calyx. 

 — N. Eare, in thickets and on roadsides, Nat. of Eu. — White-mullen. 



Lancaster County Flora 17. 



