EASTWOOD. — MEXICAN SPECIES OF CASTILLEJA. 583 



closely clustered, the ribbon-like bracts surpassing the flowers ; later 

 the flowers become rather distant on the flowering axis. 



36. C. mexicana (Hemsl.) Gray, annua vel biennis nana 7-15 cm. 

 alta hirsuta ; caulibus dense foliosis ; foliis pinnatifidis sessilibus, lobis 

 linearibus utrinque saepius 2 ; floribus sessilibus 5-6 cm. longis rectis, 

 post anthesim divaricatis ; bracteis calyce brevioribus basi latis trinerviis, 

 alte trilobatis, lobis linearibus obtusiusculis, lateralibus paulo breviori- 

 bus ; calycis lobis viridibus, laciniis anguste linearibus non-numquam 

 idem bifidis ; corolla calycem triplo superanti gracili puberula ; labiis 

 subaequalibus inferiore tripartito basi obscure saccato. — Gray in Proc. 

 Am. Acad. xxi. 404 (1886). Orthocarpus mexicanus Hemsl. Biol. Cent.- 

 Am. Bot. ii. 463, t. 63 A. f. 1-6 (1882). — The type is in hb. Kew and 

 was collected in Zacatecas, North Mexico, by Coulter. Coahuila : Sierra 

 Pata Galana, C. A. Purpus, no. 1050 ; Saltillo, E. Palmer, no. 530, 

 coll. of 1905, 992 and 993, coll. of 1880, also no. 13, coll. of 1898 j 

 same locality, C. C. Parry, no. 20£. Nuevo Leon : near Monterey, 

 altitude 610 m., C. G. Pringle, no. 10,156. San Luis Potosi: San 

 Miguelito Mountains, Dr. J. G. Schaffner, no. 82. Chihuahua : on 

 rocky hills near town, C. G. Pringle, no. 209 ; Pueblo de Galleana, 

 no. 657, and Puerto de St. Diego, C. V. Hartman, no. 631 (Lumholtz 

 Exped.). C. sessiliflora Pursh is excluded as all specimens seen appear 

 to be G. mexicana. The two are very closely related. 



37. 0. auriculata, n. sp., suffruticosa canescens pilosa et glandulosa ; 

 caulibus ramosis ; ramis ascendentibus ; foliis imbricatis anguste del- 

 toideis acutis vel apice obtusis, basi auriculate amplexieaulibus, inte- 

 gris 1-3 cm. longis 5-15 mm. latis, palmate trinerviis, nervio medio 

 distinctissimo, cinereis scabridis cum glandulis et pilis glandulosis ; 

 floribus imbricate spicatis ; bracteis foliis similibus, supremis coloratis ; 

 spicis confertis, floribus subsessilibus ; calyce 2.5 cm. longo antice in 

 altitudinem 2.5 cm., postice 7 mm. fisso, laciniis integris vel bidentatis, 

 2-3-nerviis ; corolla 3.7 cm. longa, galea paulo tubo longiore, antice 

 membranacea, dorso glandulosa, exserta 5-10 mm.; labii inferioris 

 lobis 3, exterioribus linearibus acutis 3 mm. longis paulo medium exce- 

 dentibus sinubus intus plicatis ; stylo exserto ; stigmate clavato apice 

 capitato et obscure emarginato ; capsula rhomboideo-orbiculata acumi- 

 nata compressa 1 cm. longa. — Between Huajuapan, Oaxaca, and 

 Retlatzingo, Puebla, November 19, 1894, E. W. Nelson, no. 1992 

 (type, in hb. Gray and duplicate in hb. U. S. Nat. Mus.). This species 

 is nearest to C. longiflora, differing most noticeably in its broader, con- 

 spicuously auriculate, closely imbricated leaves. The flowers are more 

 erect and the corolla in anthesis more in a line with the calyx. 



38. C. longiflora. Kunze, "caule suffruticoso,tenui, erecto, imprimis 



