92 PROCEEDINGS OP THE AMERICAN ACADEMY- 



TONELLA Nutt. There are two well-marked species. Although 

 the character of solitary ovules, assigned iu Proc. Am. Acad. 7, 

 p. 378, holds in only one of them, yet the form of the corolla — with 

 rotately expanding lobes and the lower one open, not at all enclos- 

 ing the stamens and style — appears to mark the genus as a good 

 one. Moreover, the middle leaves are almost all 3-parted or divided. 

 The species are : — 



1. C. BicoLOK Benth. Calycis lobis acutis ; coroUae bicoloris nunc albae 

 fauce ventricosa valde obliqua, labio superiore quam inferius parum breviore. 



— C. heterop/ii/lla Graliam, Bot. Mag. t. 3695, foliis imis trifidis. — Chiefly in the 

 western part of California. 



2. C. TiNCTOEiA Hartweg in Benth. PI. Hartw. Viscidior ; pedicellis brevi- 

 oribus vix uUis ; ealycis lobis linearibus vel angusto-oblongis sa?pius obtusis ; 

 coroUffi (ochroleucae, nunc albse nunc purpureo notataj) fauce ventricosissima 

 transversa, labio superiore brevissimo, lobis lateralibus intus parce barbatis. 



— C. barbata Bosse in Bot. Zeit. 12, p. 905 (1853). C. septemnervia Kellogg 

 in Proc. Calif. Acad. 2, p. 224, fig. 69. — Mainly in and towards the Sierra 

 Nevada. " 



* * Corolla minus declinata, fauce gibbosa obliqua longiore quam lata : caules 

 humiliores : folia plerumque crenato-dentata, crassiuscula, obtusa. 



•1- Filamenta pi. m. barbata : labium superius corollae (sub lobis parum callo- 

 sum) baud cristatum : calycis lobi latiores obtusi. 



. 3. C. BARTSi^FOLiA Benth. in DC. Puberula, subglandulosa, vel superne 

 viscidulo-hirsuta, erecta ; vertieillis florum 2-5; corollfe labio superiore fauci 

 obliquo ffiquilongo, lobis lateralibus emarginatis vel obcordatis ; glandula sessili 

 elongata porrecta. — C. bicolor var. ? parviflora Benth. PI. Hartw. No. 1884. 

 C. hirsuta Kellogg, 1. c. p. 110, fig. 34, forma liirsutior. The low transverse 

 callosity at the junction of the limb of the upper lip of the. corolla with the 

 throat, which is visible in several species, is more evident in this; it borders a 

 small hood-Uke depression. 



^ 4. C. CORTMBOSA Herder, Ind. Sem. Petrop. 1867, & Gartenfl. 1868, t. 568. 

 Glabra vel subpuberula, decumbens ; foliis carnosulis latioribus ; floribus in 

 capitulum unicum congestis ; corolla bicolore rectiuscula, labio superiore brevis- 

 eimo, lobis fere obsoletis ; glandula parva complanata stipitata. — Coast of the 

 northern part of California. " 



••- •(- Filamenta glabra : corollas labium superius sub lobis fornicato-cristatum : 

 calycis lobi angustiores acutiusculi ; flores parvuli violacei. 



5. C. Greenei Gray, Proc. Am. Acad. 10, p. 75. — Lake County, California, 

 E. L. Greene. 



§ 2. LaxiJlorcR, pedicellis elongatis aut solitariis aut umbellato-verticillatis. 



* Glabrae : folia inferiora saltern radicalia rotunda vel oblonga, pi. m. dentata : 

 calycis lobi acuti, fructiferi capsulam superantes. 



