Blake Revision of Polygala 75 



0.6 mm. longis; suprema interdum linearia 11-13 mm. longa 1-1.3 

 mm. lata; ima ovalia vel obovata minora. Racemi terminales et 

 extra-axillares 2-6-flori plus minusve geniculati 0.5-2.3 cm. longi. 

 Flores ut videtur albido-lutescentes 5 mm. longi. Sepalum superius 

 persistens ovatum acutiusculum anguste albido-marginatum in- 

 curvo-puberulum et -ciliolatum 2.4 mm. longum; inferiora similia 

 obtusa 1.9 mm. longa. Alae obovatae apice rotundatae basi longe 

 cuneatae glabrae 5 mm. longae 2.2 mm. latae. Carina 5.3 mm. 

 longa, rostro obtuso porrecto 0.7 mm. longo. Petala superiora 

 oblonga apice oblique 1-dentata 4.6 mm. longa. Capsula oblonga 

 basi obliqua vix stipata apice emarginulata striata incurvo-puber- 

 ula aetate subglabrata 3.8-4.5 mm. longa 2.1-2.7 mm. lata. Semen 

 breviter sericeum 3.3-3.5 mm. longum. Arillus (1.6) 2-2.2 mm. 

 altus glaber corneus, umbone 0.5 mm. alto, lobis lateralibus verti- 

 calibus appressis linearibus apice paullum dilatatis subdenticulatis 

 vel integris. Coahuila: crevices of rocks, Sierra de Zapatero, 

 July 1910, Purpus 4540 (BG); Pena, Feb. 1905, Purpus 1038 (G). 

 San Luis Potosi: Minas de San Rafael, June 1911, Purpus 5171 

 (type: G). Also Texas: Kingsville, 20 Apr. 1905, Tracy 9427 

 (G). T. 2. Fig. 48. ~"~ 



94.1. P. arizonae Chocl. Suftruticulose, the stems very nu- 

 merous, erect or ascending from a thick woody root, pale, branched, 

 rather densely covered with fine incurved hairs, 1.2-2 dm. high. 

 Lower leaves oval, acutish at each end, coriaceous, mucronulate, 

 slightly reticulate, very sparsely incurved-puberulous, subsessile, 

 6 mm. long, 3.5 mm. wide; middle and upper similar but oblong- 

 or linear-lanceolate, acute at each end, 6-12 mm. long, 1-3 mm. 

 wide. Racemes 2-8-jointed, very zigzag, 0.5-3.5 cm. long. Flowers 

 apparently rose-color (?). Upper sepal ovate-lanceolate, obtusish, 

 subglabrous, 2.8 mm. long; lower sepals oblong, obtuse, glabrous, 

 1.8 mm. long. Wings oblong-obovate, obtuse, 5 mm. long, 2.3 mm. 

 wide. Upper petals narrowly cuneate-oblong, scarcely enlarged at 

 the obliquely emarginate apex, 4.8 mm. long. Keel 5 mm. long, 

 the rostrum 0.7 mm. long. Capsule oval, subtruncate at apex, 

 oblique at base, longitudinally striate-reticulate, very sparsely and 

 finely incurved-puberulous, 4 mm. long, 2.8 mm. wide. Seed obo- 

 void-ellipsoid, pilose, 2.9-3 mm. long. Aril small, corneous, gla- 

 brous, 1.2 mm. high, the lateral lobes oblong. Chod.! Monog. ii. 

 108. t. 18. f. 13-15 (1893); Rob. in Gray, Syn. Fl. i. pt. 1. 451 



