218 xcviii. ACANTHACE.E (clarke). \^Monechma. 



separable ; but tliis is no argument againt the value of pollen as a generic cliaracter, 

 for the pollen in the 4 species is the same. 



11. M. lolioides, C. B. Clarke. Nearly glabrous, except the 

 corolla; branches 12-20 in. long. Leaves from oblong (If by \ in.) to 

 linear (2.\ by J in.), subobtuse, sessile. Spikes terminal, up to 5 by ^- in., 

 loose, especially at the base, main rhachis glabrous; bracts J by -^V "!•> 

 green with white margins, glabrous. Sepals 5, similar to the bracts 

 but rather shorter. Coiolla A in. long. Lower anther-cell long-tailed, 

 tail clavate 2-lobed at tip ; pollen ellipsoid, with 2 stopples. Style-base 

 hairy; ovary glabrous. Capsule \ in. long, 2-seeded, glabrous; the 

 solid thick stalk scarcely ^V i'^- ^^"g 5 seeds yellow-brown, smooth, as 

 of the genus, but with minute white hairs round the margins. — 

 Justicia lolioides, S. Moore in Journ. Bot. 1880, 310, t. 214, fig. 1. 



Xiower Guinea. Angola: Pungo Andongo and Huilla, Welivitsch, 5090! 

 5178 : 50991 



12. M. genistifolium, C. B. Clarke. Branches round, densely 

 and minutely tomentose. Leaves up to 2 by J in., lanceolate, acute, 

 mucronate, sessile, glabrous, yellow-green. Spikes up to 1| by J in., 

 approximate towards the end of the branches ; bracts \^y \ in., broad- 

 lanceolate, acute, mucronate, glabrous. Sepals 5, J in. long, linear, 

 puberulous. Corolla | in. long, blue and white {Lindner). One anther- 

 cell much below the other, with a long clavate tail sub-2-lobed at the 

 tip ; pollen ellipsoid, banded, with 2 stopples. Ovary minutely pubescent 

 in the upper half. Capsule nearly \ in. long, pubescent, 2-seeded ; the 

 solid broad stalk ^ in. long; seeds smooth, with acute margin. — Justicia 

 geaistifolia, Engl, in Engl. Jahrb. x. 264; Lindau in Engl. & Prantl, 

 Pflanzenfam. iv. 8 B. 849. 



Ziower Guinea. German South-west Africa : Hereroland, Luderitz, 96 ! 

 Otyitambi, BelcJc, 9 ! Damaraland ; Karibib, 3000 ft., Marloth, 1424! Lindner \ 



The bracts are simply shortened leaves, and should perhaps be described as floral 

 leaves. 



13. M. arenicola, C. B. Clarke. Small shrub; viscous glandular- 

 hairy; branches very thick, much ramified. Leaves 1 by \-\ in., 

 broad-lanceolate, acute, mucronate, subsessile, yellow-green, long-white- 

 hairy, approximate. Flowers axillary, sessile. Sepals \ in. long, linear, 

 green. Corolla exceeding h in. in length. Style hairy at the base ; ovary 

 minutely hairy in upper half. Capsule ^ in. long, 2-seeded, minutely 

 hairy; the solid thick stalk J in. long. — Justicia arenicola, Engl, in 

 Engl. Jahrb. x. 264; Lindau in Engl. Jahrb. xix. 151, and in Engl. & 

 Prantl, Pflanzenfam. iv. 3 B. 349. /. Steingroverii, Schinz ex Lindau 

 in Engl. & Prantl, Pflanzenfam. iv. 3 B. 349. 



Ziower Guinea. German South-west Africa : Hereroland ; Usakos and Ubib, 

 Marloih, 1247, 1445 1 Port Mine at Swakop River, Guerich, 105, and without pre- 

 cise locality, Luderitz, 97 I 



14. M. Desertorum, C. B. Clarke. Annual, 5 in. high, white- 

 hairy. Leaves h by \ in., lanceolate, acute, mucronate, sessile, long- 



