Oldenlandia.'] LXXV. RUBIACFJE. (J. D. Hooker.) 65 



as broad as in narrow-leaved forms of H. pumila ; stipules small, membranous, ir- 

 regularly-cut, with a long and several shorter teeth or bristles. Peduncles rarely in 

 pairs or 4- or more-flowered, or reduced and very short as in 0. brachypoda. Capsule 

 usually broad, didymous, sometimes hemispheric or narrowed below the calyx-teeth, 

 base acute or rounded, crown usually not rising above the base of the calyx-teeth, at 

 others hemispheric and approaching that of 0. Heynii. The various forms of this 

 plant are distinguished by botanists as species ; but these run so much into one 

 another, that it is impossible to correlate their descriptions exactly with the specimens 

 in Wallich's and Wight's herbaria. 0. scabrida is a very scabrid form ; 0. alsini- 

 folia a glabrous, broad membranous leaved one, like a short-capsuled 0. pumila ; 

 its tissues are sometimes full of cystoliths, in specimens from Penang, S. India, and 

 N.W. India. I have followed Mr. Hiern in adopting Linnaeus' name of corymbosa ; it 

 is certainly the plant so named in the Linnsean Herbarium, though whether it is that 

 of the " Species Plantarum " is doubtful, in my opinion. 



2. O. diffusa, Roxb. Hort. Beng. 11; FL Ind. i. 423; annual, diffuse, 

 glabrous, leaves linear nerveless, margins usually recurved, flowers solitary 

 sessile or shortly peduncled, calyx-teeth subulate rather shorter than the corolla- 

 tube, capsule didymous, crown low. DC. Prodr. iv. 426. O. brachypoda, 

 DC. 1. c. 424; Wall. Cat. 864. Hedyotis ramosissima, Kurz in Journ. As. Soc. 

 1877, ii. 133. H. diffusa, Willd. Sp. PL i. 566. 



An abundant weed throughout INDIA, from Kohilkund to Ceylon and Malacca. 

 DISTEIB. Tropical Asia to Borneo, the Philippines, and Japan. 



I keep this distinct from 0. corymbosa on the ground of its being a generally 

 recognised form, more constantly diffuse, always glabrous, with shorter stouter 

 peduncles or pedicels and larger capsules. It is, however, united by many aberrant 

 specimens with that_plant. 



VAB. y extensa ; more robust, stems as thick as a crow-quill shining 2 ft. long, 

 leaves often 2 by \ in., peduncles longer 1-2-fld., capsule in. diam. Hedyotis 

 extensa, Br. in Wall. Cat. 869. Silhet, Wallich, Griffith (Kew Distrib. 2910). 



VAR ? polygono ides ; perennial-rooted, leaves very small | in. narrow. Hedyotis 

 polygonoides, Wall. Cat. 872. Birma, Wallich. 



3. O. Heynii, Br. in Wall. Cat. 867, partly (Hedyotis); annual or 

 biennial, glabrous, erect, much branched, leaves linear- or linear-lanceolate 

 nerveless, margins usually recurved, peduncles solitary capillary 1 -flowered, calyx- 

 teeth subulate much shorter than the slender corolla-tube, capsules didymous 

 globose or ovoid, crown much protruded. 0. herbacea, Willd. ; Roxb. Fl. Ind. 

 424 (?of Linnaeus). ?O. linearis, linifolia, and asperula, DC. Prodr. iv. 425. 

 Hedyotis Heynii, W. $ A. Prodr. 416; Dalz. $ Gibs. Bomb. FL HQ.Rheede 

 Hort. Mai. x. t. 23. 



Mountainous part of INDIA from Kumaon, alt. 5500 ft., to the Khasia Mts., alt. 

 4000 ft., and southward to Ceylon ; not found in the Malay Peninsula or the Eastern 

 Himalaya. DISTRIB. Malay Islands, Tropical Africa. 



Usually a taller stricter much more robust plant than 0. corymbosa, with a longer 

 more ovoid capsule, having a much protruded crown and usually 1 -flowered solitary or 

 2-nate filiform peduncle equalling the leaves ; but these characters are far from con- 

 stant, and in some examples the flowers are panicled UnnfliMttMpds of the branches 

 as in the next subsection. The name Haynii may 

 synonyms cited, if ever these are cleared, up. 

 ' 



4. O. crystallina, Roxb. Hort. Beng. 11; Fl. Ind. i. 422; annual, 

 glabrous, branches low diffuse leafy, leaves elliptic- or elliptic-lanceolate sub- 

 acute flat, peduncles solitary 1-2-fld. filiform equalling the leaves,, calyx-teeth 

 triangular-lanceolate, bases touching in fruit, a little shorter than the corolla- 

 tube, capsule obovoid, crown low. DC. Prodr. iv. 426. O. pumila, DC. I. c. 

 425. Hedyotis pumila, Linn. f. ; Wall. Cat. 6200, chiefly, W. $ A. Prodr. 414. 



TOL. m. p 



