160 SCROPHULARIACEJfi. 



6. A. Cbulterianum, Benth. Leaves linear to oval, distinct: spike dense. 



6. A. Orcuttianum, Gr. More slender: spike loose: corolla smaller, 4 lines long. 



7. -A . Nevinianum, Gr. Similar, but seeds ribbed not honeycomb-pitted. 



8. A. subcordatum, Gr. Leaves sessile, each subtending a flower and branchlet. 



9. A. Nuttalianum, Benth. Leaves petioled: pedicels often long as violet corolla. 



10. A. vagans, Gr. Very diffuse: broad upper sepal equaling corolla- tube. 

 Var. Bolanderi, Gr. Leaves orbicular on branchlet s: upper sepal broader. 



11. A. Breweri, Gr. Similar: slender corolla-tube exceeding upper sepal. N. CaL 



12. A. strictum, Gr. Corolla violet-purple, palate hairy. Santa Barbara. 



4. MOHAVEA, Gray. 



L M. Viscida, Gr. Very viscid: lower leaves opposite: corolla yellow, purple dotted 



5. COLUNSIA, Nuttall. 



* Flowers on short pedicels or sessik in axillary v>horl, 6-8 lines long. 

 Corolla strongly declined, the throat as broad as long, nearly or quite at right angles with 



the short tube: gland sessile . . 1, 2 



Corolla less declined, throat narrower, leaves obtuse 3, 4, 6 



* Flowers but little longer or not as long as the pedicels. 



Corolla usually more than 5 lines long, strongly declined sepals acute 6, 7, 8 



Corolla mostly less than 4 lines long: lips nearly equal: stems slender 9 to 12 



1. 0. bicolor, Benth. Upper corolla lip recurved, paler than the violet lower lip. 



2. 0. tinctoria, Hartweg. Stains brown: corolla purple-striped, upper lip very short. 



3. 0. bartsieefolia, Benth. Leaves crenate, obtuse: calyx often white-hairy. 



4. 0. corymb osa, Herder. Branching: flower clusters nearly capitate. N. Cal C'st. 



5. O. Greenei, Gr. Corolla rich violet or lavender; upper lip short; side lobes small 



6. 0. grandiflora, Dongl. Flowers in whorls of 3 to 9: lower lip deep blue or violet. 

 Var. pusilla, Gr. Small form: corolla only 4 or 5 lines long, deeply colored. 



7. C. sparsiflora, F. & M. Slender: only upper flowers in 3's, &-| in. long. 

 Var. divaricata. Only 2 or 3 in. high: flowers smaller, solitary. S. F. Bay. 



8. 0. linearis, Gr. Paniculately branched: leaves very slender: pale corolla dark- 

 dotted. N. CaL 



9. O. parviflora, Dougl. Often diffuse: corolla little exserted, 2 or 3 lines long. 



10. C. Battani, Gr. Stem strict, mostly simple: corolla lips violet, 1-2 lines long, 



11. O. Childii, Parry. Stem similar: corolla light blue. In forests S. CaL 



12. 0. Torreyi, Gr. Much branched: flowers in 3's and 6's, blue or violet. 



6. TONELLA, Nuttall. 

 1. T. collinsioides, Nutt. Diffuse: flowers on slender pedicels, a line long. 



