642 LXVI. BEGONIACE^:. (C. B. Clarke.) [Begonia. 



B. Segments of female flower 3, with sometimes a small fourth ; two outer 

 large, third small lateral. (Trilobaria, A. DC.} 



19. B. aracena, Watt. Cat. 3682; leaves ovate or oblong caudate- 

 acuminate equally cordate, capsule-wings nearly equal, seeds slender cylindric, 

 tip curved acute. A. DC. Prodr. xv. pt. i. 327. B. tenella, Don Prodr. 223 ; 

 Wall. Cat. 3681. B. erosa, Wall. Cat. 3688, partly. 



Temperate Central and Western HIMALAYA ; alt. 5000-7000 ft. from DALHOTJSIE to 

 SIKKIM ; among the commonest species at Simla. 



Rhizome tuberous. Stem usually or very short, in Wallich's specimen nearly 1 ft. 

 Leaves 3 by 2 in., glabrous, crenate-serrate ; petiole 2-3 in. ; stipules ovate, glabrous. 

 Scape 3-8 in., glabrous, loosely dichotomous, few-flowered ; bracts ovate-oblong, cadu- 

 cous ; flowers medium-sized. MALE : sepals 2, ovate ; petals 2, elliptic, smaller ; sta- 

 mens numerous, shortly monadelphous ; anthers obovoid, connective not produced. 

 FEMALE : perianth-segments 2, large, ovate, opposite, and one smaller lateral, all 

 enlarged and persistent on the fruit ; styles 3, nearly separate, divided near the top 

 into two curved branches. Capsule f by nearly f in. including the wings, styles 

 persistent, upper margins of wings horizontal, dehiscing on all the faces. Seeds 

 smooth, reticulated; far more elongate than those of any other Indian species. 



20. B. scut at a, Wall. Cat. 3686, partly ; leaves ovate cordate-acuminate 

 often unequal at the base, capsule-wings unequal, larger one much ascending. 



A. DC. Prodr. xv. pt. i. 328; ? Kurz in Journ. As. Soc. 1877, pt. ii. 108. 



B. rubella, Wall. Cat. 3687. 



NTPAL ; Wallich. East Nipal, alt. 4000 ft. ; J. D. H. SIKKIM, alt. 4000 ft. ; 



C. B. Clarke. ? BURMA, Kurz. 



Nearly glabrous. Rootstock tuberous. Stem in fruit often leafless, scape-like. 

 Leaves 2-6 in., sinuate-toothed or slightly angular not serrate, glabrous or minutely 

 pubescent on the nerves beneath ; petiole very long, of the radical leaves often 6 in. ; 

 stipules ovate-lanceolate, deciduous. Scape or stem reaching 9 in., laxly dichotomous 

 upwards ; bracts oblong, acute, caducous ; flowers medium-sized, many or few. MALE : 

 sepals 2, round ; petals 2, narrower ; stamens numerous, shortly monadelphous ; an- 

 thers obovoid, connective not produced. FEMALE: perianth- segments 3, 2 larger 

 round opposite, the third smaller lateral, all deciduous ; styles 3, nearly distinct, 

 divided about half-way up into two curved branches. Capsule nearly | by f in. in- 

 cluding the wings; styles persistent ; upper margin of the wings concave, dehiscing 

 by all .three faces. Seeds short-ellipsoid. 



21. B. pvatifolia, A. DC. Prodr. xv. pt. i. 328 ; stem short or 0, leaves 

 ovate sometimes acute more or less serrate equal or scarcely unequal at the base, 

 capsule-wings unequal the larger slightly ascending. B. subovata, Wall. Cat. 



SIKKIM, alt. 4000 ft. ; J. D. H. ; alt. 1000 ft. ; C. B. Clarke, Dr. Treutler. KHASIA 

 Mrs., alt. 4000 ft. ; H. f. $ T. 



Rootstock of several tubers ; whole plant rarely exceeding 6 in. Cauline leaf 1 or 

 0. Leaves 1-2| in. diam., roundish or ovate, cordate or scarcely rounded at the base, 

 pubescent on the nerves beneath ; petiole 1-4 in., pilose above, usually pubescent 

 towards its summit ; stipules very small, lanceolate. Peduncles lax, succulent, 

 glabrous or slightly pubescent, 4-8-flowered ; bracts oblong or lanceolate ; flowers 

 rather small, white or rose. MALE : sepals 2, obovate ; petals 2, narrow-obovate ; 

 stamens about 20, shortly monadelphous, anthers obovoid, connective not produced. 

 FEMALE : perianth-segments 3, 2 obovate subequal, 1 lateral much smaller, deciduous; 

 styles 3, nearly distinct, divided half-way up into two curved branches. Capsule 

 i by 1 in. including the wings, styles persistent, upper margin of longer wing 

 straight or convex upwards, capsule dehiscing on all three faces. Seeds short- 

 ellipsoid. 



