Hygrophila.'] ACANTHACE.ii. 361 



1. H, srlicifolia, Nees in DC. Prod. xi. 92; TFir/ht, Ic. t. 1490. X 

 slightly pubescent annual or biennial, 1 to 1^ ft. high. Leaves from oblong- 

 lanceolate to linear, 1| to 3 in. long, entire. Flowers light-blue, 2 to 6 or 

 more in each axil, sun-ounded by oblong leafy bracts of 3 or 4 lines. Calyx 

 oblong, more or less 5-cleft; the segments lanceolate-subulate, pubescent. 

 Corolla about 6 lines. Capsule about 5 lines long. Seeds small, 8 or more 

 in each cell. — H. quadrivalvis, Nees in DC. Prod. xi. 89. 



Hongliong, Hance. A^'ery common in wet swampy places throughout India and the Archi- 

 pelago, and northward to Japan; and probably the common American and Australian Hy- 

 grophilas are again the same species under other names. 



3. BUELLIA, Linn. 



(Dipteracanthus, Nees^ 



Calyx more or less 5-cleft. Corolla-lobes 5, nearly equal, spreading, con- 

 torted in the bud. Stamens 4 ; anther-cells parallel and equal. Stigma 2- 

 lobed ; the upper lobe sometimes small and tooth-like. Ovules 6 or more in 

 each cell of the ovary. Capsule flattened and seedless at the base, seed-bear- 

 ing in the middle. Eetinacula hooked, usually denticulate at the top. — Herbs 

 or rarely shrubs. Flowers mostly axillary, solitary or clustered. 



A considerable genus, distributed over the warmer regions of the New and the Old Woi'ld. 

 1. R. repens, Linn. Stems decumbent or w^th divaricate branches. 

 Leaves shortly stalked, ovate or ovate-lanceolate, entire, 1 in. long or rather 

 more, slightly hairy. Flowers solitary in the upper axils, blue, \ in. long or 

 rather more. Sepals lanceolate- subulate, about 3 lines long. Capsule near 

 \ in. long, with 4 to 6 seeds in each cell, clustered together above the middle. 

 — Dipteracanthus lanceolatas, Nees in DC. Prod. xi. 124. 



Hongkong, Wright. In the Philippines, in Java, and various parts of India, but less 

 common there than the allied R. p-ostrata, which has the flowers considerably larger, besides 

 other characters. 



4. STROBILANTHES, Blume. 

 (Endopogon, Goldfussia, aud Phlebophyllum, Nees.) 

 Sepals 5, free or united. Corolla-lobes 5, nearly equal, spreading, contorted 

 in the bud. Stamens 4 or 2. Anther-cells parallel and equal. Ovides 2 in 

 each cell of the ovary. Style subidate and entire to the top, or with a veiy 

 minute upper tooth. Capsule often flattened and seedless at the base, but 

 the seeds distant in each cell. Ketinacula hooked, acute. — Herbs or shrubs. 

 Flowers in axillary or terminal, sessile or pedunculate, heads or spikes. 

 A considerable genus, ranging over tropical Asia and Afi-ica, 



Prostrate or decumbent herbs. Stamens 4. 



Flowers (2 in. long) in interrupted spikes 1.5. C/'a»ij)/o>n. 



Flowers (f in. long) in short heads 2. S. radicans. 



Undershrubs, with stiff leaves, white underneath. Stamens 2 . . . 8. ^. apricus. 



1. S. Championi, T. Anders. MSS. A glabrous herb. Stems pros- 

 trate or decumbent, 1 to 2 ft. long, ascending lo 6 in. or rather more. Leaves 

 ovate or oblong, usually acuminate and toothed ; the larger ones above 4 in. 

 long. Flowers large, in 2 or 3 distant pairs, on axillary peduncles shorter 

 than the leaves. Sepals linear, herbaceous, 9 or 10 lines long when in fi'uit, 



