118 UNITED STATES AND MEKICAN BOUNDARY. 
SEYMERIA SCABRA (sp. nov.): hispidulo-scabra, gracilis; foliis linearibus parvis pinnatipartitis 
paucilobatis superioribus 3-5-fidis integrisve ; corolla fere glabra; antheris sagittatis, loculis 
acutis; capsulis glabellis ovato-acuminatis.—Mountain sides beyond the pass of the Limpio; 
Wright, (448.) Lower leaves wanting ; the largest seen little over half an inch in length; the 
segments narrowly linear 1-2-toothed or entire. Flowers about as large as those of S. pectinata. 
Calyx-lobes narrowly linear. Capsule fully 4 lines long. Well marked by its anther-cells 
tapering gradually to an acute point. 
GERARDIA WRIGHTII (sp. nov.): caulibus e radice perenni simplicibus virgatis cum foliis 
lineari-filiformibus mucronato-acutatis scaberrimis; pedunculis flore equilongis; calyce truncato 
breviter 5-dentato ; corolla flava late campanulata e tubo brevissimo extus pubescente intus 
glaberrima; filamentis brevibus apice tantum villosis; antheris conformibus nudis obtusissimis 
basi sagittatis, loculis aristato-subulatis; stigmate clavato.—Hill sides between Babacomori and 
Santa Cruz, Sonora; Wright, (1489,) Bigelow. With the habit, calyx, and corolla of a true 
Gerardia, sect. campaniflore, this plant has yellow flowers, (according to Mr. Wright's notes 
taken on the spot,) naked anthers, short-awned at the base, and the filaments glabrous except 
near the summit. The stamens are pretty strongly didynamous, and the four anthers similar. 
GERARDIA HETEROPHYLLA, Nutt.? var. pedunculis calyce dimidio brevioribus ; foliis plerisque 
ultra-pollicaribus. Leone Spring, Texas; Zigelow. 
GeRARDIA PURPUREA, Linn. San Pedro river, etc., Texas; Parry, Schott. 
CasTILLEJA INDIVISA, Engelm. Pl. Lindh. 1, p. 47; Benth. in DC. Prodr. 10, p. 530. San 
Pedro river ; Wright, (453,) ete. ; Bigelow. .Castle-Mountain Pass, Texas, October ; Thurber. 
CasrILLEJA PURPUREA, Don.; Benth. in DC. Prodr. 10, p. 531. Euchroma purpurea, Nuit. 
Texas; Wright, &c. Not seen on the Rio Grande, but common further north and east. Well 
distinguished by the lower lip of the corolla, which is 22 lines long, but not always half as long 
as the galea. The calyx is commonly split as deeply behind as before. ‘‘ Bracts and calyx 
vaiying from sulphur yellow to flesh-color, brick-red, and cherry-red, even in the same locality, 
so that the specific name is not a good one. " (Lindheimer.) The root is perennial. 
CASTILLEJA LANATA (sp. nov.): perennis, tomento floccoso simplici denso undique incana; 
foliis linearibus integerrimis, floralibus nunc trifidis apice coloratis ; spica demum interrupta ; 
calycis aequaliter bifidi lobis obovato-oblongis integerrimis retusisve corolle labium inferius 
multum superantibus.—Along and near the Rio Grande, from Eagle Pass, etc., to El Paso; 
Wright, (452, 1495), Bigelow, Parry, ete. On the Limpio; Wright, (451.) Near Buena Vista; 
Gregg. А most remarkable white-woolly species, with larger leaves and flowers than C. foliolosa. 
Тһе latter species is sometimes almost ав white, but its tomentum is formed of repeatedly branched 
hairs, whereas the wool of C. lanata consists of long and simple arachnoid hairs. 
CASTILLEJA TOMENTOSA (sp. nov.): perennis, pilis simplicibus laxis cano-lanata ; foliis linea- 
ribus margine revolutis integerrimis, floralibus trifidis superne coloratis; spica demum inter- 
rupta; calycis subaequaliter bifidi lobis semibifidis lanceolatis acutis corollam aequantibus.— 
Mabibi, Sonora, June, 1851; Thurber. Considerably like the last and C. foliolosa, but the 
wool less dense and floccose than in C. lanata, and the calyx different, and apparently fally as 
long as the galea. Floral leaves and calyx-lobes red or purple. 
CASTILLEJA ANGUSTIFOLIA. Euchroma angustifolia & E. Bradburii, Nutt. in Jour. Acad. 
Philad. 7, p. 46? On Live Oak creek, the Limpio, etc., Wright, (1491, 1492, with yellow 
bracts and calyx ;) also in his first collection, but undistributed. Mr. Н. Engelmann collected 
it at Bridger’s Pass. This most likely belongs to Nuttall’s species, but the lower leaves are 
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