7 14 PATAGONIAN EXPEDITIONS : BOTANY. 



4. As the preceding, but calyx, prismatic, 5 -angled. 8. Mimulus, p. 721. 



^5. Corolla not spurred nor saccate. Anther-cells usually fused. Stigma capitate. 



Minute herbs. 

 d. Leaves opposite ; internodes distinct. Corolla 2-lipped, 4~5-lobed. Calyx 5- 



parted. Stamens 2, anther-cells divaricating. 6. Bryodes, p 720. 



d2. Leaves basal, or apparently so, the internodes being short. Calyx 5 -toothed. 



Stamens 4, the pollen-sacs fusing. 7. Limosella, p. 720. 



A2. The 2 dorsal corolla-lobes (or the upper lip) covered in the bud by one or both the lateral 



lobes. (RHINANTHOIDE^E.) 

 b. Corolla-lobes all flat and spreading, or the dorsal pair erect. 



f. Pollen-sacs finally united apically. Dorsal corolla-lobes often upright. Autophytes. 

 d. Corolla-tube short or none. Stamens 2 or 4, subequal, rarely 6-8. 



e. Stamens 4-5, rarely more, pollen-sacs fused. Corolla 4-merous, rotate ; with 

 no tube. Erect herbs or shrubs, with opposite leaves. 



9. Scoparia, p. 721. 

 e2. Stamens only 2. Leaves, at least the lower, opposite. 



10. Veronica, p. 722. 

 d2. Corolla with long tube, or campanulate. Stamens 4, didynamous. Calyx 5- 



parted. 



e. Leaves opposite ; flowers almost regular. Low herbs, n. Ourisia, p. 723. 

 e2. Leaves alternate. Corolla-tube ventricose, gradually widening. Stigma 



2-lobed. Coarse erect herbs and undershrubs. 12. Digitalis, p. 725. 



c2. Pollen-sacs distinct. Corolla-lobes spreading flat. Calyx 5 -toothed, the teeth not 

 exceeding the tube. Stamens not protruding, their filaments hairy. Erect herbs 

 or half-shrubs, often more or less parasitical. 13. Gerardia, p. 726. 



62. Corolla lobes forming a helmet-like upper-lip, with reflexed border ; corolla-tube nearly 

 straight. Stamens 4 ; pollen-sacs equal. Stigma capitate. Usually small, erect 

 herbs, often more or less parasitical ; with simple or palmatifid leaves and flowers in 

 terminal spikes. 14. Euphrasia, p. 727. 



i. CALCEOLARIA Linn. 



Herbs or shrubs, with generally opposite or whorled leaves, and cymose 

 or rarely I -flowered peduncles, with yellow, white or purplish flowers. 



Calyx slightly adhering to the ovary, 4-partite, its parts valvate. Co- 

 rolla-tube nearly obsolete ; its limb concave, 2-lipped, the lips entire, con- 

 cave or shoe-like; the anterior lip being usually large and inflated. 

 Stamens 2. Stigma small. Capsule ovate-conical, septicidal, with 2-cleft 

 valves. Seeds numerous, striate, marginless. 



Species 140, chiefly American, from Mexico by the Andes to Magellan ; 

 2 in New Zealand. 



KEY TO THE SPECIES. 

 A. Lower corolla-lip contracted at the base. 



b. The contracted part long. Leaves long-attenuate, subentire. Stem very short. Pedun- 

 cle scape-like, i -flowered. 



