FIGWORT FAMILY 765 



Leaves shorter than the internodes; anthers opening at the distal end. 



16. P. cyananthus. 

 I.,eavos longer than the internodes; anthers opening their whole length. 



14. P. cyanocaulis. 

 Calyx-lobes with very broad scarious margins, forming basal auricles; 

 anther-sacs opening their whole length. 17. P. Brandegei. 



Caly.x-lobes orbicular or broadly ovate, abruptly short-acuminate, very scarious 

 and erose. 18. P. glaber. 



Anthers perfectly glabrous. 



Sterile filament glabrous or nearly so. 

 Plant glabrate. 



Calyx-lobes obovate or ovate, abruptly acuminate, decidedly scarious- 



margined. 19. P. speciosus. 



Calyx-lobes acute or obtuse, scarcely scarious-margined. 



20. P. unilnteralis. 

 Plant densely puberulent. 21. P. Wardii. 



Sterile filament strongly bearded. 22. P. perpulcher. 



IV. Palmeriani. 



One species. 23. P. Pahneri. 



V. Grandiflori. 



One species. 24. P. (jrandiflorus. 



VI. Halliani. 

 One species. 2.5. P. Hallii. 



VII. ACUMINATI. 



Inflorescence interrupted; bracts except the lowermost shorter than the flowers; basal 

 leaves spatulate or oblanceolate. 

 Stamens exserted; bracts rounded-cordate, abruptly short-acuminate; sepais ovate, 



scarious-margined. 26. P. cyathophorus. 



Stamens included. 



Bracts ovate or cordate. 



Calyx-lobes ovate, with scarious toothed margins, abruptly acuminate; bracts 



ovate, acute. 27. P. pachyphyllus. 



Calyx-lobes narrowly lanceolate, not scarious-margined. 



Corolla-hmb 15-18 mm. broad, glabrous within; tongue of the sterile fila- 

 ment strongly incurved, short yellow-bearded at the apex. 



28. P. acuminatus. 

 Corolla-limb about 1 cm. broad, usually sUghtly bearded within; tongue of 

 the sterile filament less strongly incurved, yeUow-bearded its whole 

 length. 29. P. nitidus. 



Bracts lanceolate to Unear-lanceolate. 



Stem-leaves except the uppermost obtuse, oblong or oblanceolate, tapering 



into a -Hinged petiole. 30. P. arenicola. 



Stem-leaves acute, sessile or the lowermost petioled, but the petiole not winged. 

 Calyx-lobes broadly obovate, scarious, erose, abruptly contracted into a 



very short acumination. 48. P. Watsonii. 



Calyx-lobes ovate or lanceolate, acute or gradually acuminate. 



Calyx-lobes lanceolate; plant 2.5-4 dm. liigh. 31. P. sccundlflorus. 

 Caly.\-lobes ovate, decidedly scarioas-margined; plant 2 dm. or less 

 high. 32. P. Fendleri. 



Iniior&scence dense; bracts large, long-acuminate, most of them exceeding the flowers; 

 basal leaves linear or nearly so, narrower tlian the stem-leaves. 

 Bracts broadly lanceolate, or the upper ovate. 



Bracts strongly veined; coroUa 2.5-3 cm. long, ventricose; basal leaves linear. 



33. P. Haydenii. 

 Bracts not strongly veined; corolla about 2 cm. long, scarcely ventricose; basal 

 leaves linear-oblanceolate. 34. P. caudalus. 



Bracts narrow, hnear-lanceolate, not strongly veined. 35. P. angustifolius. 



VIII. Petiolati. 



One species. 36. P. petiolotus. 



IX. WlPPLE.\NI. 



One species. ' 37. P. stenosepalus. 



X. Crist.\ti. 

 CoroUa-tube decidedly giljbous- ventricose; sterile stamen densely yellow- villous; corolla 

 purpUsh. 

 Stem viscid-villous as well as puberulent, especially the upper part. 



Inflorescence densely glandular- villous ; corolla 2.5-3.5 cm. long; leaves entire or 



slightly denticulate. 38. P. Erianthera. 



Inflorescence sparingly glandular-villous; corolla 2-2.5 cm. long; leaves sharply 

 dentate. 39. P. saliens. 



Stem merely puberulent. 



Basal leaf-blades obovate. spatulate, or ovate, broader than the ca\iUne leaves. 



Corolla 2-2.5 cm. long. 40. P. Cleburnci. 



Corolla 15-18 cm. long. 41. P. Moffattii. 



Basal leaf-blades linear to linear-oblanceolate, usually narrower than the upper 



cauline leaves. 



Corolla over 2 cm. long; calyx-lobes linear-lanceolate, about 8 mm. long. 



42. P. Jamesii. 



