FIG WORT FAMILY 



'65 



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



16. P. cyananthus. 

 lyeaves longer than the intemodes; 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. 



Calj-x-lobas 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, decidedlv scarious- 



margined. 19. P. speciosus. 



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



20. P. unilaleralis. 

 Plant densely puberulent. 21. P. Wardii. 



Sterile filament strongly bearded. 22. P. perpulcher. 



One species. 

 One species. 

 One species. 



IV. Palmeriani. 



V. GKA>rDIFLORI. 



YI. H.\ixL\>a. 



YII. ACUMINATI. 



23. p. Palmeri. 



24. P. grandifloTus. 



25. P. Hallii. 



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

 leaves spatulate or oblanceolate. 

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



scariou.s-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. 



CoroUa-limb 15-18 mm. broad, glabrotis within; tongue of the sterile fila- 

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



28. P. acuminalus. 

 Corolla-hmb 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 winged 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 a elimination. 4S". P. Watsonii. 



Calj-x-lobes ovate or lanceolate, acute or graduaUj acuminate. 



Calyx-lobes lanceolate: plant 2.5—4 dm. high. 31. P. secundiflorus. 

 Calyx-lobes ovate, decided! j' scariotis- margined: plant 2 dm. or less 

 high. 32. P. Fendleri. 



Inflorescence dense: bracts large, long-acuminate, most of them exceeding the flowers; 

 basal leaves h'near or nearly so, narrower than 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: coroUa about 2 cm. long, scarcely ventricose; basal 

 leaves Itnear-oblanceolate. 34. P. caudatus. 



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



One species. 

 One species. 



YIII. Petiolati. 



IX. TVrPPLE-\NI. 



X. Cristati. 



36. p. petiolotus. 



37. P. stenosepalus. 



CoroUa-tube decidedly gibbous- ventricose; sterile stamen densely yeUow-'S'illous ; corolla 

 pm-phsh. 

 Stem %-iscid-%'iUous as well as puberulent, especially the upper part. 



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



sUghtly dentictilate. 38. P. Erianthera. 



Inflorescence sparingly glandular- viUous ; 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 cauhne leaves. 

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



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. 



