Flora of the Pa louse Region 1 57 



263. VERBASCUM. 



Tall and usually woolly biennial herbs: leaves alternate; cauline 

 sessile or deeurrent: flowers in large terminal spikes or racemes: 

 calyx 5-parted: corolla 5-lobed, rotate, the lobes slightly unequal: 

 stamens 5, all anther-bearing: style flattened at the apex: capsule 

 globular, many-seeded. 



Plant densely woolly. V. THAPSUS. 



Plant glabrous or sparsely glandular. V. bi.attaria. 



V. thapsus L. Densely woolly throughout, the stout erect stems 1-2 m. 

 high, somewhat wing-angled by the deeurrent bases of the leaves: leaves 

 thick, oblong, acute, entire or obscurely dentate, narrowed toward the base, 

 10-30 cm. long, gradually reduced upwards: flowers yellow, 16-20 mm. 

 broad, in a dense long spike: stamens unequal, the two lower and longer 

 glabrous, the others with hairy filaments. Introduced as a weed. 



V. blattaria h. -Stems slender, erect, 30-60 cm. high, not angled, glab- 

 rous below, glandular-pubescent above: leaves oblong, obtuse or the upper 

 acute, crenate-dentate or cut-lobed, all but the lower sessile and partly clasp- 

 ing, 6-8 cm. long: raceme loose; pedicels spreading: calyx glandular: corolla 

 yellow or white, 2-2.5 cni - broad: stamens all with hairy filaments: capsules 

 subglobose, 6-7 mm. long. Sparingly introduced. 



264. SCROPHULARIA. 



Perennial herbs: leaves opposite: flowers small, in loose cymes 

 in a narrow terminal panicle: calyx deeply 5-cleft: corolla 5-lobed, 

 the 4 upper lobes erect, the lower spreading: stamens 4; the fifth ster- 

 ile one a scale-like rudiment at the summit of the corolla-tube: cap- 

 sule many-seeded. 



S. califomica Cham. Puberulent: stems stout, simple, about 1 m. high, 

 somewhat 4-sided: leaves triangular-ovate, acute, coarsely and unevenly 

 toothed or cleft, 5-12 cm. long, on petioles about half as long: panicle 

 narrow, 20-40 cm. long, somewhat glandular: bracts lanceolate-attenuate: 

 flowers dull-purple or green: calyx-lobes rounded, as long as the tube: cor- 

 olla 6-S mm. long: rudimentary stamen broad, spatulate: capsules conical, 

 glandular. Low ground, not uncommon. Our form is not typical. 



265. PENTSTEMOX. 



Perennial herbs: leaves opposite, the upper sessile or partly 

 clasping, the floral reduced to bracts: flowers showy, in a racemose 

 panicle: calyx 5-parted: corolla tubular, more or less inflated or 

 bell-shaped, either decidedly or slightly 2-lipped; the upper lip 2- 

 lobed, the lower 3-cleft: anther-bearing stamens 4; the sterile fifth 

 filament about equalling the others: style long; stigma entire: cap- 

 side many-seeded. 



