﻿BORAGINE^ (Wright). 



25 



XII. LOBOSTEMON, Lehm. 



Calyx 5-partite ; segments lanceolate or linear. Corolla tubular 

 funnel-shaped, naked inside the throat ; lobes b, subequal, imbricate, 

 rotundate, subpatent. Stamens 5, fixed in the corolla-tube, exserted 

 or included ; filaments usually vmequal, with a scale or transverse 

 tuft of hairs at the base ; anthers subglobose, ovate or oblong, 

 obtuse. Ovary : lobes 4, distinct, on a flat or very slightly convex 

 disk ; style filiform, undivided ; stigma small, subcapitate. Nutlets 

 4, distinct, erect, ovoid-trigonous or acuminate, granular-scabrid or 

 rugose, fixed by flat basal areolse. Seeds straight. 



Perennial herbs, snbsbrubs or shrubs, scabrid-canescent or hispid; leaves 

 alternate, sessile, with simple or bulbous-based hairs, rarely almost glab- 

 rous ; cymes terminal, capitate, spicate or paniculate ; flowers white, blue or 

 purple. 



DiSTRiB. Species about 50, some in tropical Africa. 



A genus gradually passing into Echium, with which it should perhaps be 

 united. 



Section 1. Cymes not in a dense spicate panicle or head. 

 Branches bristly ; leaves bearing scattered 



bulbous-based bristles only ... (1) sanguineus. 



Branches glabrous ; leaves bearing white acumi- 

 nate tubercles only : 

 Leaves 3-7 lin. broad : 



Stamens inserted in the middle of the 



corolla-tube 

 Stamens inserted in the corolla-throat... 

 Leaves less than 3 lin. broad : 

 LeaVes smooth : 



Bulbous-based hairs on margins and 

 midrib only : 

 Leaves narrowly lanceolate, sub- 

 falcate 



Leaves oblong 



Bulbous-based hairs on whole under 

 surface 



Leaves rugose ... 



Branches pubescent ; leaves hairy : 



Leaves at least 1 in, long, densely clotbcd on 

 both surfaces with silky adprcssed hairs 

 (bulbous-bases inconspicuous) : 

 Leaves 2 lin. or less wide : 



Hairs on back of leaves minutely 



bulbous-based (8) cinerens. 



Hairs on back of leaves not 



bulbous-based (9) Wurmbii, 



Leaves at least 3 lin. wide : 

 Leaves acute : 



Leaves oblong or ovate-lan- 

 ceolate (10) argenteus. 



Leaves oblanccolate : 



Stenis pilose (11) pilicaulis. 



Stems strigose (12) monlanus. 



(2) 

 (3) 



(4) 

 (5) 



(fi) 

 (7) 



glancophyllus. 

 leevigatuB. 



glaber. 

 collinus. 



Swartzii, 

 acatissimus. 



