

Leucopoffon .'] lxvji. EPACRinEiE. 183 



Leaves obovate or cuncalc, obtuse or with a miuute, callous 



point 90. L. cuneifolius. 



Leaves oblong-lanceolate, with a rigid point. 



Sepals (about 1 line) less than half the corolla-tube. 



Western species 100. Z. strictus. 



Sepals (about 2 lines) more than half the corolla-tube. 



Eastern species lOl- L. MltcheUii. 



Leaves linear, with a fine rigid point. Sepals very small. 

 Corolla long and sleudcr. Eastern species 102. L.junijyenmis. 



Seuies V. Concavae. — Leaves concave or Iceeled. 



Leaves rigidly raucronate. 

 Ovary 3- or 2-celled. Leaves lanceolate. 

 Leaves tapering into a long, rigid point. 



Flowers erect, 3 to 4 linos long. Leaves broad or narrow. 



Eastern species 103. //. rufus. 



Flowers pendulous, nearly 3 lines. Leaves rather narrow, 



Western species 104. L. conostephioides. 



Leaves narrow, very shortly pointed. Flowers erect, not 2 



lines long. Eastern species \{i^, L, deformis, 



Ustrulomaxerophyliuui is in technical characters very ueai" X. conostephtoides, but with 

 much larger flowers, a 5-ccllcd ovary, etc.) 

 Ovary S-ccIlcd. 



Leaves ovate or ovate-Ianceolntp, strongly striate, 2 to 3 

 lines long. Corolla with the lonff dcn?c white beards of 

 Perojoa lOG. L. jKHjonocaiyx. 



leaves fiucly veined or veiuless. Corolla beards short, and 

 not very white. 

 Leaves narrow (2 to 4 lines), shortly mucronatc. 



Flowers about 2 lines Ions: leaves not keeled, finely ^ , , .. 



veined underneath m, LArevipms. 



Flowers about 1 \ lines lon^^. Leaves keeled but scarcely 



veined 7 108- X- durns. 



Leaves lanceolate or linear (about \ in.), tapering into a 



pungent point ........... , \m. L, malUJiorus. 



Leaves (2 to 4 lines) rather broad and very concave. 



Eastern species. 

 Sepals 1 line Ions, obtuse. Corolla very little longer . 110. L, a^pressus. 



Sepals nearly 2 lines, very acute. Corolla 3 to 4 lines 



lono- , , \\\. L. neoanghcus. 



l^eavcs as broad as long, veVy obtuse or minutely inueronate, very 



concave, and embracing the stem, 

 leaves sessile, cordate, imbricate, 4 to 6 lines diameter, con- 



CDaling the flowers 



l^cavcs sessile but narrowed at the base, cucullate, 1 to 1| Hues ^,,;/7,,,c 



diameter. Flowers 3 lines long \U, L crassiflonis. 



leaves pctiolate, obovatc-orblcular. 1 to 2 lines diameter. ,,^,,^,jnr^hdliis 



IWers about 2 lines luug \U. L.strongylophi/llus. 



^aves oblong or almost ovate, obtuac or with a minute, callous 



pouit. 



I^eaves 2 to 4 Uues long. Corolla U IIuW. the tube as long 

 asthecalyi. Fruit erect U^. L, crassifohus. 



i^cavcs 2 to 4 lines long. CoroUa 2 lines, the tube very short, 

 the lobe8 Bcurcely e/ceedinuMhc calyx. Fruit erect . - . W^. L. corgnocarpu.^^ 



^^vcs 1 to 2 lines long. Corolla 2 lines, the tube equal to the 



^tyx, the lobes erect and counivent at the base. Fruit pen- 



dulous , . 117. x/. Wooam. 



Ws 2 to 3 lines long. Corolla 3 lines* the slender tube at ^f^nfhin 



W twice as long as^hc calyx . . ! \\%, L. fepfanfh,'^. 



112. Z. obiectus. 



y 



