Blake Revision of Polygala 29 



limestone rocks near Tucson, Santa Catalina Mts., 1881, Lemmon 

 498 (G). T. 1. Fig. 16. 



30. P. longa, sp. nov. Suffruticulosa erecta pluricaulis 2-4.5 

 dm. alta. Caules simplices vel sparse ramosi ut axes racemorum 

 et pedicelli dense griseo-incurvo-puberuli. Folia inferiora oblonga 

 vel oblongo-ovalia utrimque obtusiuscula mucronata puberula pilis 

 incur vis 1.1-1.7 cm. longa 4.5-8 mm. lata; media et superiora 

 oblongo-lanceolata vel -lineara acuta vel acuminata interdum ob- 

 tusa mucronata griseo-puberula pilis subincurvis brevissime petio- 

 lata paullum nervosa 1.7-3.6 cm. longa 1.5-4 mm. lata. Racemi 

 laxiflori 3-10.5 cm. longi. Sepala lanceolata pubescentia 3-3.5 mm. 

 longa. Alae ovales vel suborbiculares apice rotundatae subsparse 

 pubescentes 4.8-5.5 mm. longae 2.6-4 mm. latae. Carina purpurea 

 glabra 5-5.7 mm. longa. Petala superiora oblique oblonga 3.6 mm. 

 longa. Capsula ciliolata elliptica emarginata 8 mm. longa 6-7 mm. 

 lata. Semen 4-4.5 mm. longum pilosum. Arillus 1 mm. altus 

 (margine dorsali 1.5 mm. longo), umbone piloso 0.4 mm. alto, mar- 

 gine scarioso valde lobulato ad 0.6 mm. alto in lobos duos laterales 

 et unum dorsalem longiorem horizontalem subdistincte cliviso. 

 P. puberula Gray! PI. Wright, ii. 30 (1853), not i. 41 (1852). 

 Chihuahua: Potts (BK). Also Texas: stony ridges, and in the 

 alluvium at their base, on the Pecos R., May 1852, Wright 936 p. p. 

 (type coll.: GK); without locality, Mexican Boundary Survey 

 under Emory 189^(K). T. 1. Fig. 17. 



The Kew specimens of Wright 936 are mixed with specimens of 

 P. hemipterocarpa Gray. The species has been confused with 

 P. obscura. 



31. P. retifolia, sp. nov. Caules 2-3 e basi fruticulosa erecti 

 simplices vel supra sparse ramosi ad 4 dm. alti dense pubescentes 

 pilis aliis brevioribus incurvis aliis longioribus rectis patent ibus. 

 Folia media et superiora linearia vel lineari-lanceolata acuminata 

 mucronulata basi acuminata ad rotundata-cuneata sicut caules 

 pubescentia reticulato-nervosa (nervis lateralibus validioribus ca. 

 5-jugis) 2.6-4 cm. longa 1.8^ mm. lata, in petiolis 1 mm. longis vel 

 brevioribus; infima valde reducta 4-11 mm. longa. Racemi caules 

 et ramos terminantes 8-14 cm. longi 20-30-flori sicut caules et 

 pedicelli (3-4 mm. longi) pubescentes. Flores 5-6 mm. longi ut 

 videtur viridescentes. Sepala ovata vel ovato-lanceolata acuta vel 

 acuminata ut caules pubescentes 2.5 mm. longa. Alae obovato- 



