SCROPHULARINEA, 445 
(Bourgeau, 875); GuatemMaLA, Volcan de Fuego, 10,000 to 11,000 feet (Salvin). 
Hb. Kew. 
9. Pentstemon hallii, var. arizonicus, A. Gr. Synop. Fl. N. Am. ii. p. 263. 
Norra Mexico, within the old boundary on Mount Graham (Rothrock). 
The type inhabits Colorado. 
10. Pentstemon hartwegii, Benth. Pl. Hartw. p. 48; DC. Prodr. x. p. 323; 
A. Gr. in Proc. Am. Acad. vi. p. 64. 
Pentstemon gentianoides, Lindl. Bot. Reg. 1838, t. 3; Bot. Mag. t. 3661, excl. syn., non Don. 
Pentstemon coccineus, Hoffm. in Linnea, xvi. Litt.-Bl. p. 281, non Engelm. 
Pentstemon puniceus, Lilj. in Linnea, xvii. p. 111, non A. Gr. 
NortH Mexico, Chihuahua (Potts); Sourn Mexico, Real del Monte (Hartweg, 362 ; 
Coulter, 1279 ; Galeotti, 1054). Hb. Kew. 
11. Pentstemon imberbis, Trautv. de Pentast. in Comment. Acad. Petrop. iv. 
1839 (reprint, p. 22); DC. Prodr. x. p. 824; A. Gr. in Proc. Am. Acad. vi. p. 59. 
Pentstemon humboldtii, Don, Gen. Syst. iv. p. 640. 
Chelone imberbis, H. B. K. Nov. Gen. et Sp. ii. p. 368. 
NortH Mexico, mountains east of Saltillo (Palmer, 974), region of San Luis Potosi, 
6000 to 8000 feet (Parry & Palmer, 668), Sierra Madre (Seemann, 2107); Souru 
Mexico, Cordillera of Oaxaca, at 7500 feet (Galeotti, 1047), Santa Fé (Bourgeau, 613), 
Anganguio (Hartweg, 360), Zimapan (Coulter, 1276). Hb. Kew. 
12. Pentstemon lanceolatus, Benth. Pl. Hartw. p. 22; DC. Prodr. x. p. 324. 
SourH Mexico, Aguas Calientes (Hartweg, 184). Hb. Kew. 
13. Pentstemon linarioides, A. Gr. in Torr. Bot. U.S. & Mex. Bound. Surv. 
p. 112; Proc. Am. Acad. vi. p. 66; Synop. Fl. N. Am. ii. p. 270. | 
New Mexico; Arizona.—Nortu Mexico, Sierra San Luis, Chihuahua, and Sonora 
(Schott). 
14. Pentstemon perfoliatus, Brong.; DC. Prodr. x. p. 326; Proc. Am. Acad. 
vi. p. 74. 
Pentstemon connatus, Deppe in Otto et Dietr. Allg. Gart.-Z. xii. p. 276. 
Pentstemon cordatus et Pentstemon verticillatus, Mart. et Gal. in Bull. Acad. Brux. xii. (reprint, 
pp. 8 & 4); Walp. Rep. vi. pp. 639 et 640. 
Sourn Mexico, Cordillera of Oaxaca, 9000 to 10,000 feet (Galeotti, 1045, 1046), 
summit of San Felipé (Andriewx, 174), Zimapan (Coulter, 1278). Hb. Kew. 
15. Pentstemon puniceus, A. Gr. in Torr. Bot. U.S. & Mex. Bound. Surv. 
p. 113; Proc. Am. Acad. vi. p. 63; Synop. Fl. N. Am. ii. p. 264. 
. Nortu Mexico, Guadalupe Cafion, Sonora (Smith, Thurber). 
