Blake Revision of Polygala 107 



winged, conspicuously nervose, 3.5 mm. long. Seed cylindric, 

 barely curved. Lobes of aril linear, membranaceous, sinuate, 1/3 

 as long as seed. Chod. Bot. Jahrb. lii. Beibl. 115. 84 (1914), as 

 P. microlonchum. Based on Seler 3138, from lightly wooded lime- 

 stone hills, Chacula-Uaxac Canal, Huehuetenango, Guatemala, and 

 Seler 3123. Not seen; description compiled. 



132. P. dolichocarpa, sp. nov. Caules plures basi suffruticulosi 

 e radice lignosa simplices vel sparsissime ramosi 1-3.5 dm. alti 

 sulcati sparse minutissime incurvo-puberuli mox denudati. Folia 

 linearia acuminata cuspidulata crassiuscula glabra supra planius- 

 cula subtus convexa evenia 3-4.5 mm. longa 0.3 mm. lata. Racemi 

 demum 5-10 cm. longi laxe multiflori. Flores albi purpurascenti- 

 venosi 2.7-3.2 mm. longi. Sepala ovata medio purpurascentia su- 

 perius obtusum 1.4 mm. longum, inferiora mucronulata vel acuta 

 1-1.2 mm. longa. Alae spathulato-obovatae obtusae basi paullum 

 obliquae glabrae 3-sub-5-nerviae 2.7-3.2 mm. longae 1.1-1.3 mm. 

 latae. Carina 2.6 mm. longa ; crista e lobis ca. 4-jugis oblongis inte- 

 gris vel 2-3-lobatis constans. Petala superiora oblonga apice ro- 

 tundata 2.2-2.3 mm. longa. Capsula oblonga 2 mm. longa 1 mm. 

 lata, loculo postico paullo longiore dehiscente angustissime alato, 

 antico indehiscente immarginato. Semen (e loc. post.) cylindricum 

 breviter pilosulum 1.5 mm. longum, arillo 1 mm. longo, lobis 2 

 lateralibus scariosis linearibus appressis; semen (e loc. antico) 

 simile sed arillo deficiente. San Luis Potosi : Minas de San 

 Rafael, May 1911, Purpus 5566 (type coll.: BG); Bagre, Minas 

 de San Rafael, May 1911, Purpus 5165 p.p. (BG). T. 2. 

 Fig. 83. 



133. P. scoparia HBK. Fruticulose, the stems numerous, fas- 

 cicled from a woody root, branched, slender, striate, finely in- 

 curved-puberulous, 7.5-13 cm. long. Leaves rather crowded, 

 linear-acicular, acuminate to the cuspidate apex, coriaceous, 1- 

 nerved but not sulcate beneath, glabrous or very sparsely incurved- 

 puberulous, subsessile by a pale slightly narrowed base, 5-9 mm. 

 long, 0.4-1 mm. wide. Racemes terminal, densely flowered or loose 

 below, 0.5-2.3 cm. long. Flowers white, the wings green or purplish- 

 maroon along the midline, 2.6-2.9 mm. long. Sepals oval or ovate, 

 obtuse to subacute, with green or purplish central line and white 

 border, 0.9-1 mm. long. Wings obovate, barely mucronulate at 

 the obtuse (by inflexion apparently acute) apex, cuneate at base, 



