ee ee Ete as Pe ree in a) ee ee ey ee eR =: 
a ehgs aast e ap Eh a i tere Se ee 
ROBINSON. — NEW SPERMATOPHYTES, CHIEFLY FROM MEXICO. 31 
angustatis albo-callosis sursum paulo hispidulis, pappi setis ca. 25 
laete albis minute barbellatis.— On limerock, Sierra Madre, above 
Monterey, Mexico, alt. 915 m., 27 April, 1906, C. G, Pringle, no. 10,231 
(type, in hb. Gray). This species belongs to a small but increasing 
group of very nearly related plants, including &. Parryi Gray, 
E. chrysostylum Robinson, and £. sphenopodum Robinson. From 
these species, the present one differs in its exceedingly short crisped 
pubescence. 
Eupatorium durangense Robinson, n. sp., herbaceum 6-9 dm. 
altum ; caule tereti oppositirameo folioso purpurascenti ubique minu- 
teque crispo-puberulo ; foliis oppositis ovatis deflexis breviter petio- 
latis firmiusculis obtusis vel vix acutis paulo supra basin 3-5-nerviis 
supra viridibus pilosellis subtus vix pallidioribus leviter reticulato- 
venosis in nervis venisque sparse pubescentibus serratis 2-3 cm. longis 
1.3-2.2 em. latis scabrido-ciliolatis, petiolo puberulo supra concavo 
2-3 mm. longo; capitulis ca. 12-floris numerosis in corymbis convexis 
terminalibus collectis, pediceliis 5-12 mm. longis filiformibus griseo- 
puberulis ; involucri squamis pallide viridibus griseo-puberulis oblongo- 
linearibus acutis valde inaequalibus sed laxe imbricatis interioribus ca. 
4-5 mm. longis ; corollis albis 6-7 mm. longis, tubo proprio gracili 
fauces gradatim sed distincte ampliatos subcylindratos: subaequanti; 
achaeniis nigris gracilibus 5-angulatis in angulis sursum hispidulis ; 
pappi setis simplicibus corollam aequantibus superne laete albis basin 
versus roseis. — Barranca below Sandia Station, Durango, Mexico, alt. 
2135 m., 15 October, 1905, C. G. Pringle, no. 10,096 (type, in hb. 
Gray). 
#e angustius Robinson, n. var., foliis angustioribus ovato-lance- 
olatis attenuatis maximis 3.2 cm. longis 1.7 cm. latis supremis saepe 
alternantibus. — Mesa de Sandia, northwestern Durango, Mexico, alt. 
2745 m., 14 October, 1905, C. G. Pringle, no. 10,097 (type, in hb. 
Gray). This variety has something the appearance of L. Robinsoni- 
anum Greene, but may be readily distinguished by its more herba- 
ceous involucre, thickish more pubescent and regularly deflexed leaves, 
shorter stouter petioles, etc. 
Eupatorium erythrocomum Robinson, n. Sp., suffrutescens laxe 
procumbens ; caulibus tenuibus teretibus arcuatis ramosis atropurpu- 
reis striatulis plerumque ca. 2 mm. diametro cum pilis moniliformibus 
adpresse villosulis ; foliis oppositis ovatis vel ovato-lanceolatis breviter 
petiolatis, limbo 2-2.8 cm. longo 1-1.2 em. lato supra basin subrotun- 
datam integram argute serrato apice acuto 3-nervio supra viridi glabri- 
usculo subtus saepissime purpurascenti praesertim In nervis venisque 
adpresse pilosis, petiolo tereti purpureo ca. 2 mm. longo, venis supra 
