FIG WORT FAMILY 209 



Plant glabrate. . , . , ,, 



Calyx-lobes obovate or ovate, abruptly acuirunate. denidedly scanous- 



"margined. 19- P- speciosus. 



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



20. P. unilateralis. 

 Plant densely pubenilent. 21. P. Wardii. 



Sterile fllamenl strongly bearded. 22. P. perpukhcr. 



IV. F.VLMERI.^NI. 



One .species. 23. P. Palmeri. 



V. Grandiflori. 



One species. 24. P. (jrandiflorus. 



VI. Halliani. 

 One species. 25. P. Ilalhi. 



VII. ACXBIINATI. 



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. 2G. P. cyathoohorus. 



Stamens included. 



Bracts ovate or cordate. 



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



ovate, acute. 27. P. pachyphijllus. 



Calvx-lobes narrowly lanceolate, not scarious-margined. 



Corolla-limb 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 slightly bearded within; tongue of 

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

 length. 29. P. Tjitidus. 



Bracts lanceolate to linear-lanceolate. 



Stem-leaves excejit 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 acumination. 48. P. Watsonii. 



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



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

 Cal.yx-lobes ovate, decidedly scarious-margined: plant 2 dm. or le.ss 

 high. 32. P. Fendlcri. 



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

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

 Bracts broadly lanceolate, or the upper ovate. 



Bracts strongly veined; corolla 2.5-3 cm. Ion,?, ventricose; basal leaves linear. 



33. P. Haydenii. 

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

 leaves linear-oblanceolate. 34. P. caudatus. 



Bracts narrow, linear-lanceolate, not strongly veined. 35. P. anguslifolius. 



VIII. Petiol.\ti. 



One species. . 36. P. petiolotus. 



IX. WiPPLEANI. 



One species. 37. P. stenosepalus. 



X. Cristati. 

 Corolla-tube decidedly gibbous-ventricose; sterile stamen densely yellow-villous; corolla 

 piu-pUsh. 

 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 



shghtly 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 cauline leaves. 

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



Corolla 1.5-18 cm. long. 41. P. Mnffatlii. 



Bjisal 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. 

 Corolla glabrous within, less than 2 cm. long; caly.x-lobes lanceolate, 4-5 mm. 

 long. 43. P. pmniliis. 



Corolla-tube fimnelform, scarcely gibbous; sterile stamen sparingly yellow-villous above; 

 corolla white. 44. P. albidus. 



XI. H.\RBOURIAXI. 



One species. 45. P. Harbourii. 



XII. CO.VFERTI. 



Sterile filament usually naked; leaves sharply dentate. 46. P. deuslus. 



Sterile filament bearded; leaves entire or denticulate. 

 Calyx glabrous or puberulent but not glandular. 



Corolla sulphur-yellow. 47. P. confertus. 



