564 Lxxxvii. GENTiANE^ (baker AND brown). [Enicost'ema. 



has led to much confusion in the nomenclature ; they are all perfectly distinct. 

 The name E. verticil latum should be restricted to the American plant [Gentiana 

 rerticillata, Linn. Syst. ed. 10, ii. 952). 



2. E. latiloba, N. E. Br. Plant 1-2 ft. high, glabrous. Stems 

 simple or branching towards the base, slightl}^ 4-angled. Leaves 

 H-2J in. long, lJ-8 lin. broad, linear to elongate-oblong, acute or 

 obtuse, spreading. Clusters many-flowered. Flowers sessile, 5-merous 

 Bracteoles 1-1 1^ lin. long, |-1 lin. broad, broadly obovate or rhomboid- 

 obovate, acute or obtuse and apiculate, with broad submembranous 

 margins. Calyx lJ-2 lin. long, obconic-campanulate, 5-lobed to half 

 w^ay down ; lobes broadly imbricating, §-1 lin. broad, very broadly- 

 ovate or suborbicular, obtuse, minutely apiculate, with broad sub- 

 membranous margins. Corolla-tube 2-2J lin. long, cylindric; lobes 

 |-1 lin. long, J-| lin. broad, oblong, obtuse or subacute, with inrolled 

 margins in the dried state. Stamens inserted about f the way up the 

 corolla-tube, included ; filaments with a membranous two-tiered or 

 flounced hood at their base; anthers J lin. long, acute. Style |-| lin. 

 long, filiform, not thickened upw^ards ; stigma capitate. Capsule 2 lin. 

 long, 1-1^ lin. broad, ellipsoid, rather obtuse. — E. verticillatum, Gilg in 

 Engl, tk Prantl, Pflanzenfam. iv. ii. G8, fig. 31, B-E (fig. 31, A, from its 

 small size, probably belongs to E. littorale, Bl.). 



XTile Iiand. British East Africa : Mombasa, Wakefield ! 



XWEozamb* I>ist. German East Africa: Kovuma Bay, KirJc ! Usam.bara;. 

 Doda. Hoist, 2930 ! aiid without precise locality, Hannington ! 



10. PYCNOSPHiEKA, Gilg in Kunene-Sambesi Exped. 333. 



Calyx 3-partite ; sepals unequal, the dorsal minute, the two lateral 

 narrow, complicate, keeled. Corolla 3-lobed ; tube cylindric ; lobes- 

 spreading. Stamens 3, inserted at the sinuses of the corolla; filaments 

 filiform, dilated into a small hood at their base ; anthers versatile, 

 oblong. Ovary 1 -eel led, with 2 parietal or slightly intruded placentas ; 

 style filifoim ; stigmas 2, long, linear. — Erect herbs. Leaves opposite. 

 Flowers in dense bracteate heads, corymbosely arranged at the ends of 

 the stem and branches. 



Species 2, endemic. 



Gilg- describes the cuter sepal as very large and bract-like, embracing the base 

 of the corolla. He has evidently mistaken the large bract embracing each flower for 

 the dorsal sepal, wbich latter, being very small, he appears to have overlooked. The 

 ovary is also described as 2-celled ; I find it as described above. — N. E. Br. 

 Inflorescence a corvmb . . . , . . 1. P. trimera. 



Inflorescence im elongated panicle . . . . 2. P. Buchanani. 



1 . P. trixuera, Gilg in Kunene-Samhesi Exped. ' 833. Annual, 

 20-28 in. high, glabrous. Stem erect, corymbosely branching at the 

 top only. Basal leaves crowded, 1-1\ in. long, 2-3 lin. broad, oblong, 

 or oblong-lanceolate, obtuse or subacute, narrowed to the base ; stem- 



