Ruellia. | XCVIII. ACANTHACEX (CLARKE). 49 
softly hairy ; bract 4 in. long, ovate; bracteoles } in. long, spathulate- 
oblong. Calyx 3-3} in. long, 5-parted nearly to the base, 2-lipped ; 
2 segments of anticous lip narrow oblong obtuse, middle segment of 
posticous lip twice as broad, elliptic, two innermost segments linear, all 
segments nearly equal in length. Corolla exceeding 1 in. long; linear- 
cylindric portion of the tube nearly 4 in. long; lobes 5, subequal, short, 
contorted in bud. Stamens, anthers, ovary, style, as of the genus; 
pollen globose, deeply honeycombed. Ovary glabrous except the tip. 
Capsule } in. long, oblong-cylindric, about 12-seeded; seeds at nearly 
subequal distances, from the base of the capsule, small, discoid, glabrous 
on the faces, very shaggy on the margins with hairs that spring out 
elastically on being wetted. 
Lower Guinea. Angola: Mossamedes, Welwitsch, 5033! 5042! 
A remarkable species, differing in habit and character from any other Old World 
Ruellia. Lindau (in Engl. & Prantl, Pflanzenf. iv. 3B. 301) doubts as to the genus 
under which it should be placed. 
15. R. Marlothii, Hngl. in Engl. Jahrb. x. 257 and xix. 151. 
Branches shrubby, 4-angular, pubescent upwards. Leaves 1 by 3 in, 
ovate, undulate, subobtuse, both faces stellately softly white hairy, 
petiole ys—t in. long. Inflorescence few-flowered, axillary, with stellate 
bairs nearly concealed by numerous long simple few-jointed white hairs ; 
bract ovate, small. Calyx } in. long, 5-parted nearly to the base, 
2-lipped ; segments linear, slightly widened at the obtuse tip, middle 
segment of posticous lip twice as wide, a little longer than the other 
segments. Corolla 1 in. long, orange (fide Engler) ; tube inflated from 
hear the base, curved ; lobes 5, elliptic, subequal. Pistil and stamens 
of the genus; pollen globose, honeycombed. Capsule } by yz in. 
parallel-sided, glabrous; 16-seeded from the base.—Lindau in Engl. « 
Prantl, Pflanzenf. iv. 3B. 310. 
Lower Guinea. German South-West Africa: Hereroland ; Usakos, 3000 ft.. 
Marloth, 1434! Dammaraland ; Swakop, Guerich, 104! 
9. ENDOSIPHON, Benth.; Benth. et Hook. f. Gen. PI. ii. 1085. 
Corolla-tube long, linear-cylindric ; upper inflated part linear- 
cylindric, hardly } in. in diam.; anthers included deep in the corolla- 
tube.— Leaves in often-unequal pairs, oblique and unequal at the base ; 
Margin entire. Otherwise as Ruvellia ; inflorescence as in FR. amabilis, 
S. Moore, and its allies. 
Species 2, endemic in West Tropical Africa. 
Calyx-segments 3-1 in. long; _jiin.long . 1. &. primuloides. 
1 in. long ; corolla-tube 1-1} in. long i 
alyX segments 1-1} in. long ; corolla-tube 2 in. long . 2. EB. obliquus. 
1. E. primuloides, Benth. in Benth. & Hook. f. Gen. Pl. ii. 1086. 
Small Shrub; stems 1-2 ft. high, nearly simple, with spreading hae 
eaves up to 3} by 1} in., narrow-elliptic, narrowed at both ends, so tly 
ly hairy, tip acute, margin entire wavy; cystoliths numerous. 
‘ . . Z al, one 
Slender, prominent ; petioles } in. long, base of leaf often unequa ’ 
VOL. y, 
Mo.Eest-. Cal agen, 
