268 SYSTEMATIC BOTANY. 



of a 5th, which is sometimes perfect ; oftener still only 2. Ovary 

 free, 2-celled. Style i. Stigma 2-lobed. Capsule 2-valved, many- 

 seeded. 



- f Corolla lobes [Stamens ^-Veronica. 



i nearly equal- - , g tems ^\z-Di S itali s . 



Lower lip inclos- [Stamens 4 -j 



ing the upper -j [ Stems branching Gerardia. 



Corolla two- f Flowers with colored bracts Castilleia. 

 lipped j NQ ^^^ p tems simple _^ 

 bracts 



I. Verbascum. Calyx 5 -parted. Corolla rotate, with 5 nearly 

 equal lobes. Stamens 5, all perfect, declinate. Capsule globose or 

 ovoid, many-seeded. @ 



1. V. THAPSUS (Mullein"). Plant densely woolly throughout ; stem tall, 

 rigidly erect, usually simple ; leaves decurrent, oblong, acute ; flowers yel- 

 low, in a long, dense, terminal, cylindrical spike ; two lower stamens usually 

 beardless. In neglected fields, 4-7 feet high. June-August. 



2. V. BLATTARIA (Moth Mullein). Stem simple or branching above, 

 leafy, erect ; leaves smooth, clasping, oblong, coarsely serrate, the lower 

 petiolate ; flowers in a long, leafy raceme, yellow or white, usually tinged 

 with purple ; stamens unequal, with purple, woolly filaments. Road-sides, 

 2-3 feet hi^h. June-July. 



2. Linaria. Calyx 5-parted. Corolla personate ; upper lip bifid, 

 reflexed ; lower lip 3-cleft ; palate prominent ; tube inflated and 

 spurred. Stamens 4. Capsule opening at the summit by 1-2 pores. 



1. L. VULGARIS (Toad-flax Snapdragon). Smooth and glaucous; stem 

 erect, with short, leafy branches ; leaves alternate, crowded, linear-lanceo- 

 late ; flowers yellow, in dense, terminal spikes ; corolla with a long spur, the 

 throat completely closed by the orange-colored palate. Common along road- 

 sides. July-August. 



2. L. CANADENSIS (Canadian Snapdragon}. Smooth ; stem slender, 



