50 XCVIII. ACANTHACE® (CLARKE). [ Endosiphon. 
side subacute, the other rounded lower down the petiole ; in the upper 
pair of leaves one often reduced to }-1 in.long. Pedicels 1-1} in. long, 
solitary, axillary, with spreading hairs; bract 0; bracteoles, 2, sub- 
opposite 4-1 in. long, linear, placed about } in. below the calyx. Calyx 
$-1 in. long, divided almost to the base; segments slightly unequal, 
linear-ligulate, minutely hairy and hispid with long white spreading 
hairs. Corolla blue(G. Mann); tube 1-14 in. long: limb almost salver- 
shaped, 1} in. in diam., of 5 subequal roundish lobes contorted in 
bud. Stamens 4, subequal; anthers long, linear, muticous, glabrous; 
pollen shallow-honeycombed. Ovary glabrous, 8—12-ovuled.—Lindau in 
Engl. & Prantl, Pflanzenf. iv. 3B. 308; T. Anders. MS. in herb. Kew 
(primuleflorus). 
Upper Guinea, Fernand») Po, 1000 ft., Jann, 571! 
2. E. obliquus, (. B. Clarke. Leaves up to 5 by 2 in., rather 
harsh, cystoliths very large; petals very short, base of leaf very unequal, 
lower side rounded or subcordate; one leaf of every pair (seen) greatly 
reduced, }-j in. long. Pedicels 1} in. long, bracteoles longer than in 
F.. primuloides and farther from calyx. Calyx-segments up to 1} in. 
long. Corolla purple (Bates); tube 2 in. long; otherwise as H. primu- 
loides. 
Lower Guinea. Gaboon Munda; Sibange Farm, Biittner, 357! Soyaux, 
395! Como River, Bates, 457 ! 
Further material may show this to be a form of E. primuloides. 
10. MELLERA, S. Moore in Journ. Bot. 1879, 225. 
Calyx divided nearly to base; segments 5, subequal, linear-oblong. 
Corolla 1 in. long, divided half-way down, 2-lipped ; segments contorted 
in bud, the middle one of anticous lip much broader, ovate-oblong. 
Stamens 4, subsimilar; anthers 2, all spurred at the base or (in WV. 
submutica) spur nearly or quite wanting; pollen subglobose, longi- 
tudinally many-ribbed. Style with one oblong-linear stigmatic arm, 
the other suppressed; ovary with 4-6 ovules in each cell. Capsule 
subeylindric, seed-bearing nearly from the base; seeds more than 4 per- 
fected, glabrous on the faces, with many long white hygroscopic hairs 
on the edges.—Small shrubs. Leaves toothed. Flowers few in the 
upper axils, runniag into an apparently bracteated terminal spike. 
Bracteoles 2, linear-oblong, as long as the calyx. 
Species 3, confined to Tropical Africa. 
These plants were placed by Bentham next Paulowilhelmia and Mimulopsis, from 
which they differ by the 2-lipped corolla with the tube inflated nearly from the base. 
Because of the 2-lipped corolla, S. Moore and Lindau place the genus near Hygrophila, 
from which it is remote in habit. 
Anther-cells all spurred at the base. 
Inflorescence dense . . . . . . - 1. M. lobulata. 
Lateral cymes of the panicle loose . . . . » 2. MM. nyassana. 
Anther-cells nearly muticous at the base . . . . 3. UM. submutica. 
1. M. lobulata, S. Moore in Journ. Bot. 1879, 225, t. 203. Hairy. 
Leaves 2-35 by 1-2 in., lower up to 8} by 4 in., ovate-lanceolate 
