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. 
MG 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-Gcm. 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 Proe. 
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. Coanvt.a : Sierra 
Pata Galana, C. A. Purpus, no. 1050 ; Saltillo, #. Palmer, no. 530, 
coll. of 1905, 992 and 993, coll. of 1880, also no. 13, coll. of 1898; 
same locality, C. C. Parry, no. 20}. Nusvo Leon: near Monterey, 
altitude 610 m., C__G. Pringle, no. 10,156. San Lois Porost: 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, ©. V. Hartman, no. 631 (Lumholtz 
Exped.). -. sessiliflora Pursh is excluded as all specimens seen appear 
to be C. mexicana. 'The two are very closely related. 
37. C. auriculata, n. sp., suffruticosa canescens pilosa et glandulosa ; 
caulibus ramosis ; ramis ascendentibus ; foliis imbricatis anguste del- 
toideis acutis vel apice obtusis, basi auriculate amplexicaulibus, inte- 
gris 1-3 em. longis 5-15 mm. latis, palmate trinervus, nervio medio 
distinctissimo, cinereis scabridis cum glandalis 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, Pursta, November 19, 1894, E. W. Nelson, no. 1992 
(type, in hb. Gray and duplicate in hb. U. S. Nat. Mus.). ‘This species 
spicuously auriculate, closely imbricated leaves. The flowers are more 
