se 
Rungia. | XCVII. ACANTHACEH (CLARKE). 253 
or terminating lateral branches, sometimes very short, up to 4 by 1 in.; 
bract up to } by 3 in., ovate, acute, green pubescent, with very broad 
shining white margins; or the bract sometimes orbicular, } in. in diam., 
emarginate, owing to the great development of the scarious margin 
towards the top; bracteoles exceeding } in. in length, boat-shaped, 
obtuse. Sepals 4 in. long, nearly free, linear, pubescent. Corolla } in. 
long, white (Barter); anticous lip ovate. Filaments glabrate; one 
anther-cell very slightly below the other, with a large clavate tail ; 
pollen ellipsoid, with 3 bands and pores, and one row of smooth 
tubercles on each side of each stopple. Pistil and lower part of the style 
hairy; style-branches 2, subequal, very short. Capsule } in. long, 
ovoid, subsessile, compressed, 4-seeded ; placentee rising elastically from 
the capsule-base; seeds cerebrose-tubercular.—/usticia garckeana, Biittn. 
in Verhandl. Bot. Ver. Brandenb. xxxii. (1890), 38. 
Upper Guinea. Sierra Leone, Kofiu Mountain, Scott-Elliot, 4616! Sugarloaf 
Mountain, 2000 ft., Scott-Elliot, 3964! and without precise locality, Afzelius ! Win- 
wood Reade! Lagos: Otta Ifo, Rowland! Ikirun, Millson ! Eppah on the Kradu 
Lagoon, Barter, 3274! and without precise locality, Moloney, 16! Millen, 59! 
Cameroons: Yaunde, Zenker & Staudt, 172! 
Lower Guinea. Congo, Smith! Angola: Quidando River, Marques, 336! 
Kuango River, Bittner, 356! 
2. R. paxiana, C. 2B. Clarke. Herbaceous, up to 5 ft. high. 
Leaves, up to 5 by 1} in., broad-lanceolate, acuminate at either end, 
somewhat hispidulous; petiole 3 in. long. Spikes terminal and quasi- 
axillary, 1} by $ in. ; bracts } in. long, or rather more, orbicular, with 
a few long white hairs, and broad white margins; bracteoles nearly 
linear. Corolla hardly $ in. long, pale purple (@. Jann). One anther- 
cell clearly lower than the other, not tailed; pollen as of 2. grandis. 
Capsule } in. long, nearly glabrous, except the tip, sometimes 4-seeded ; 
placente rising “elastically from the base; seeds papillose, hardly 
tubercled.— FR. pubescens, T. Anders. MS. Justicia paxiana, Lindau in 
Engl. Jahrb. xx. 63, and in Engl. & Prantl, PHanzenfam. iv. 3 B. 350. 
Lower Guinea. Cameroons: Buea, 3500 ft., Preuss, 956! Cameroon Moun- 
tain, 3000-4000 ft., Mann, 1968! Fernando Po, 3000 ft., Mann, 588! 
Lindau has redistributed the species of Rungia, Justicia, Himantochilus, &e., by 
the pollen; the Diclipteroid group have “Spangen (banded) pollen,” the Justicioid 
have “ Knétchen (tubercled) pollen.” He attributes to Rungia “placenta arising 
elastically from capsule-base,” while nothing is said under the genus Justicia re- 
garding this character. Under this system, Rungia pubescens, T. Anders., appears 
as Justicia paxiana, Lindau; Rungia grandis, T. Anders., is returned to Kew from 
Berlin marked Justicia grandis (T. Anders.), Lindau, Rungia (?) pubinervia, T. 
Anders., is published as Himantochilus marginatus, Lindau. Per contra, Justicia 
tenella, T. Anders., is called Rungia Baumannii, Lindau. The “banded” pollen 
appears to me separable by no definite line from the tubercled pollen ; the smooth 
bands (in the centre of which are the pores) have often “ obsolete” rows of marks or 
dots which (in adjacent species) are slightly stronger and reckoned as tubercles. If 
Rungia grandis and R. pubescens, T, Anders., are transferred to Justicia, the genus 
Ruagia must be abandoned altogether. 
_ 8. R. Buettneri, Lindau in Engl. Jahrb. xx. 46. Leaves 4 by 1} 
in., narrowed at both ends, upper surface puberulous, finally glabrate ; 
