214 FIGWORT FAMILY 



A. Leaves opposite, or the tipper sometimes alternate. 

 Stamens with anthers 4; corolla tubular to funnelform 

 or two-lipped. 

 Plant annual; stamens 4. 



Corolla 2-lipped, the middle lobe of lower lip folded 



lengthwise and enclosing the stamens and style. 1. Collinsia. 

 Corolla 2-lipped or nearly regular, the lower lip not 

 folded. 

 Flowers not blue; all 4 stamens with anthers.... 4. Mimulus. 

 Flowers pale blue; 2 stamens without anthers... 5. Ilysanthes. 

 Plant perennial; stamens 5, but only 4 with anthers. 

 Corolla globose; 4 lobes erect, 1 reflexed; sterile 



stamen adhering to upper side of corolla 2. Scrophularia. 



Corolla tubular or bell-shaped or funnelform, often 

 2-lipped; sterile stamen free from corolla ex- 

 cept at base 3. Pentstemon. 



Stamens 2 ; corolla nearly wheel-shaped 6. Veronica. 



B. Leaves alternate; stamens 4, all with anthers; corolla 2-lipped, 

 the upper lip enclosing the stamens and style. 



Leaves either entire or with narrow entire sharp-pointed 

 lobes. 



a. Corolla with upper lip much longer than the min- 



utely 3-toothed lower-lip; stems 1 foot or more 



high; perennials; bracts and calyx-lobes reddish. 7. Castilleja. 



b. Corolla with upper lip much longer than the broad 



inflated 3-saccate lower lip; stems 1 ft. or less 



high (annuals except O. pilosus) 8. Orthocarpus. 



c. Corolla-lips about equal; stems 1 ft. or more high; 



annuals; bracts and calyx green 9. Cordylanthus. 



Leaves much dissected into short lobes, feather-like; 



perennials; calyx green 10. Pedicularis. 



Verbascum thapsus L., the Common Mullein, will probably be found in 

 low valleys. It is a coarse, woolly herb, 3 to 6 ft. high, with yellow, nearly 

 regular flowers in a dense spike 1 ft. or more long. 



1. COLLfNSIA. 



Annuals with opposite simple leaves and blue purplish or 

 lilac flowers which are mostly borne in successive whorls. 

 Corolla irregular somewhat as in the Pea Family. Fifth 

 stamen reduced to a minute gland at base of corolla-tube. 

 Seeds 4 to 12. 



Flowers almost sessile, in dense whorls; calyx glandular. .. 1. C.tinctoria. 

 Flowers slender-pediceled. 



Plant glabrous 2. C. parviflora. 



Plant glandular above. 



Flowers l A in. long 3. C. torreyi. 



Flowers smaller 4. C. wrightii. 



1. C. tinctoria Hartweg. Erect, l / 2 to 2 ft. high, very glan- 

 dular above, imparting a brown stain, the flowers nearly 

 sessile in successive dense whorls. Leaves broadly lanceo- 

 late, sessile by a broad base, \y 2 to 2y 2 in. long, y A to 1 in. 



