Limnophila.] XC. SCROPHULARIACEH (HEMSLEY AND SKAN). 317 
Species about 30. chiefly in the warmer parts of Asia, Australia and Africa. 
Leaves opposite (rarely the lower verticillate). 
Plant up to 18 in. high ; leaves elliptic-ovate . - oh. 2. Barter. 
Plant 1-2 in. high ; leaves lanceolate or sublinear . 2. ZL. tenera, 
Leaves verticillate (the uppermost sometimes opposite). 
Flowers sessile or subsessile. 
Flowers axillary, rather distant. 
Leaves with capillary segments ; bracts longer 
than the calyx . : : 3. L. ceratophylloides. 
Leaves with narrowly linear segments; bracts 
shorter than the calyx : c . . 4 £. sessiliflora, 
Flowers rather crowded in short terminal spikes . 5. L. dasyantha, 
Flowers distinctly stalked ; : - : . 6. ZL. gratioloides. 
1. L. Barteri, Shan. A gland-dotted herb, everywhere densely 
pilose or glabrescent below. Stems ascending, 9-18 in. high, sparingly 
branched. Leaves opposite (rarely in whorls of about 10 near the base, 
pinnatifid), 4-8 lin. long, 2-44 lin. broad, elliptic-ovate, serrulate, 
Semiamplexicaul, obtuse or subacute. Flowers sessile or subsessile, 
axillary, sometimes forming terminal or short lateral distant-flowered 
spikes ; bracteoles 2, inserted on the base of the calyx, 15 lin. long, 
linear-lanceolate, scarcely acute, pilose. Calyx 14-14 lin. long, pilose 
and sprinkled with yellowish glands ; segments unequal, subacuminate 
or subacute. Corolla apparently yellow, 14-1} lin. long; tube 3 Jin. 
broad. Anther-cells subcontiguous at the base. Style 1 lin: long. 
Capsule 13 lin. long, broadly ovoid, obtuse, glibrous, bisulcate. Seeds 
globose-ellipsoid, very minutely tuberculate. 
Upper Guinea. Sierra Leone: Lomaburu, Scott-Elliot, 5032! Southern 
Nigeria ?, Barter, 751 ! 
2. L. tenera, Skan. A nearly glabrous erect cespitose apparently 
annual herb 1-2 in. high; stems numerous i branches spreading. 
Leaves opposite, 1-4 lin. long, lanceolate or sublinear, scarcely acute or 
subapiculats, entire, sessile, semiamplexicaul. Flowers axillary and 
terminal or quasi-terminal, mostly alternate, solitary, about iz lin. long ; 
pedicels 13-3 lin, long; bracteoles 1-14 lin. long, subulate. Calyx 15— 
1} lin. long, 5-partite; segments subulate, erect or at length reflexed. 
Corolla whitish to pale blue, slightly glandular-puberulous outside, 
somewhat pilose about the throat inside. Capsule # lin. long. Seeds 
netted-areolar, irregularly ovoid.—Stemodiacra tenera, Hiern in Cat. 
Afr. Pl. Welw.i. 759. Stemodia tenera, K. Schum. in Just, Jahresber. 
Xxvi. i. 395. Ambulia tenera, Engl. & Gilg in Warb. Kunene-Samb. 
Exped. 362, in note. 
Lower Guinea. Angola: Pungo Andongo; swampy places at Lake Qui- 
binda, Welwitsch, 1241 ! 
3. L. ceratophylloides, Skan. <A herb with the habit _ 
Ceratophyllum, wholly submerged or the upper part emerged a . 
time of flowering ; stems about a foot long, slender, glabrous, branche “ 
densely leafy above, leafless below. Leaves 3-1 in. long, verticillate, a 
