Blake — Revision of Polygala 23 
l. Middle leaves obovate-oblong, 4.5-7 mm. wide. a P. Palmeri. 
l. eee eet linear or linear-lanceolate, 1-3 mm 
m. Hower. er leaves mo more or less reduced, 4.5-10 (22) 
ng, % 
n. AvP with more or less distinct dorsal lobe 
raised on the constricted apex of the seed 
P. Barbeyana. 
n. Pape without distinct dorsal lobe, sniesiaalé; 6 oO. 
m a ORO Rie 1 a iis P. intricata. 
. Umbo nearly glabrous............... 26. P. zacatecana 
m. Upper leaves not reduced, L 5-3.1 em. long....29. P. racemosa. 
J Aril | hie the depth of its more or less lobed or lobu- 
late ene mara equalling or exceeding the 
height o 
p. Aril sa 3 anaes, peck lobes about 4 as long as 
ean keke Gaal. rere Rates 38.1. P. tenuiloba. 
p. Aril see t divided into 3 slender lobes, q- 
q. Aril veil-like, with broad scarious lobulate margin 
r. Sepals and wings quickly deciduous.......... Oo. hn o_.. 
r. Wings and ee sepal rather persistent... .... 34. Zani. 
q. Aril otherwise, 
s. Upper jwhcinty ovate . ars! ‘ 
s. Weinge O05 tims, WO ss Sct est 36. P. oophylla. 
t. Wings 4-5 mm lo eet : 
u. Scarious border of aril distine tly deeper 
cee ee of umbo; keel rate PB se 
Pa Sa a a eta Bra na. 
u. PE, ‘Seo f aril barely as deep 
height of umbo; keel rola: 35. P. brachyanthema. 
a ey leaves linear to oblong- anceolate, 
€. pp leaves reduced, 5-14 (23) mm. ey Big Sees 
ppe 
_ (P. Conzatt 3d Rose (no . 21) and P. oazacana Chod. (no. 33) have not been 
inserted in ra key owing to lack of information.) 
20. P. Pavont Chod. Undershrub, the stems puberulous, as- 
cending, divaricately branched, 1-2 dm. ita Leaves elliptic or 
elliptic-ovate, obtuse, ‘“‘ irregularia et diversa,”’ puberulous, 20 mm. 
long, 12 mm. wide. Racemes few-flowered. Flowers 5-6 mm. long. 
Sepals lance-linear, acute, pubescent. Wings elliptic, subsessile, 
obtuse, glabrous, reticulate-veined. Upper petals dilated at apex, 
subacute, scarcely shorter than keel. Staminal tube and free por- 
tions of filaments long-pilose. Ovary elliptic, ciliate. Capsule and 
seed unknown. — Chod. Monog. ii. 14 (1893). 
Not seen; description compiled. Based by Chodat on a Pavon 
specimen (hb. Boiss.) said to have been collected in Mexico. A 
specimen of Pavon’s in the British Museum, so labelled by Chodat, 
has obviously nothing to do with this species as originally described. 
