404 CONTRIBUTIONS FROM THE NATIONAL. HERBARIUM. 



1. VERBASCTJM L. 



Biennials, more or less hairy; leaves alternate; flowers in spikes or racemes; corolla 

 flat, only slightly irregular. 



Plants densely woolly; flowers in a long dense spike 1. V. thapsus. 



Plants nearly glabrous; flowers in loose racemes 2. V. blattaria. 



1. Verbascum thapsus L. Mullen. One plant seen on east slope on trail to 

 Iceberg Lake; occasional about Lake McDonald, and up to Sperry Chalets; rather 

 plentiful at Belton. Native of Eur.; naturalized in N. Amer. — Plants 1 to 2 meters 

 high, with a dense covering of pale feltlike hairs; leaves spatulate or oblanceolate, 

 10 to 40 cm. long; spikes 10 to 50 cm. long; flowers yellow, 1 to 2 cm. wide. 



2. VerUascum blattaria L. Moth mullen. A few plants at Sun Camp and at 

 Lewis's. Native of Eur.; naturalized in N. Amer.— Plants 30 to 80 cm. high, green; 

 leaves oblong or obovate, 4 to 10 cm. long, coarsely toothed or lobed; flowers white 

 or yellow, about 3 cm. broad. 



2. LIN ARIA L. 



1. Linaria vulgaris Mill. Butter-and-eggs. A few plants at Belton, Lewis's, 

 and just below Sperry Chalets. Native of Eur.; naturalized in N. Amer.- — Glabrous 

 perennial, pale green, 20 to 50 cm. high; leaves alternate, linear, entire, 2 to 5 cm. 

 long; flowers in racemes; corolla 2-lipped, 2 ta 3 cm. long, pale yellow with orange 

 throat, the tube with a spur at base; stamens 4. 



The plant has a characteristic odor. 



3. COLLINSIA Nutt. 



1. CoUinsia parviflora Dougl. Bluelips. Frequent at low and sometimes at 

 middle altitudes, in woods or thickets or on open slopes. B. C. to Calif., Ariz., and 

 Ont. — Branched annual, 10 to 30 cm. high, minutely hairy; leaves opposite, oblong 

 to linear, entire or nearly so; flowers slender-stalked, in the axils of the leaves; corolla 

 pale blue, 2-lipped, 4 to 6 mm. long. 



4. PENTSTEMON Schmidel. Beardtongue. 



Perennials with leafy stems; leaves opposite, entire or toothed; flowers showy, in 

 racemes or panicles; calyx deeply 5-cleft; corolla somewhat 2-lipped, with 5 lobes; 

 fertile stamens 4, a fifth sterile one also present, this often bearded. 



Corolla yellowish white 1. P. confertus. 



Corolla blue or purple. 

 Corolla 0.8 to 2 cm. long, blue. 



Corolla 1 cm. long or shorter, with, a narrow tube; calyx lobes with long slender 



tips 2. P. procerus. 



Corolla about 1.5 cm. long, with a broad tube; calyx lobes acute or short-pointed. 

 Leaves, at least most of them, finely toothed, bright green; plants with glands, 



at least on the calyx 3. P. virens. 



Leaves all entire, glaucous; plants glabrous 4. P. nitidus. 



Corolla 2.5 to 4 cm. long, pale or deep purple. 



Anthers glabrous; sterile stamen bearded • 5. P. erianthera. 



Anthers woolly; sterile stamen not bearded. 



Leaves rounded to oblong, 1 to 3 cm. long, most of them petioled; plants 



usually lees than 20 cm. high 6. P. ellipticus. 



Leaves linear-lanceolate, 4 to 10 cm. long, mostly sessile; plants usually 30 to 

 50 em. high. 



Leaves glabrous 7. P. lyallii. 



Leaves finely hair> 8. P. linearlfolius. 



