62 PROCEEDINGS OF THE AMERICAN ACADEMY. 
fertilibus 6-9 cm. longis, amentis maturis 3-5 oblongo-cylindricis atro- 
brunneis pedunculatis 7-14 mm. longis 5-7 mm. diametro; nuculis 
cuneato-obovatis vel suborbicularibus rufobrunneis lucidis 1.5-2 mm. 
longis. — Mountains about Cima Station, Mexico, alt. about 3000 m.,, 
30 August, 1905, C. G. Pringle, no. 10,040 (type, in hb. Gray). Re- 
sembling large-leaved A. jorullensis HBK., but quite lacking the close 
covering of waxy or granular atoms which characterizes the lower leaf- 
surface of that species. 
Alnus Pringlei Fernald, n. sp. arbor parva; ramis ramulisque 
angulatis, jJuventissimis cinereo-puberulis mox glabratis ; foliis late 
elliptico-ovatis 4.5-9 em. longis 3-7 cm. latis apice breviter acuminatis 
basi rotundatis, marginibus regularibus vel paulo sinuatis crebre serru- 
latis, venis subtus prominentibus rufescentibus pilosis ; petiolis 0.5-1 - 
em. longis piloso-ciliatis ; ramis floriferis elongatis ; amentis ¢ 4-7 
terminalibus anthesi 5-6 cm. longis ; pedunculis fructiferis 2 valde di 
vergentibus crassis; amentis 9 3-4 sessilibus maturitate cylindricis 
2.2-2.7 cm. longis 0.9-1.1 cm. diametro atrobrunneis ; nuculis crassis 
late cuneatis et angulatis 2.5-3 mm. longis obscuris pallide brunneis. — 
By streams, near Uruapan, Michoacan, Mexico, alt. about 1525 m., 13 
November, 1905, C. G. Pringle, no. 10,125 (type, in hb. Gray). Most 
nearly related to A. acuminata HBK., which has larger oblong-ovoid 
ashy-brown strobiles 1.5 em. thick, and larger thick-winged lustrous 
nutlets. 
Evpnorera arrensis HBK., var. villicaulis Fernald, n. var. Hume- 
canthus Benthamianus Kl. & Garcke, in Kl. Tricoce. 42 (1860), not 
Euphorbia Benthami Hiern, Cat. Welw. Afr. Pl. i. 943 (1900). Aw 
phorbia ariensis Benth., Pl. Hartw. 51, no. 387 (1840), not HBK. 
Nov. Gen. et Sp. ii. 57 (1817). Caulibus in parte inferiore valde vil- 
losis ; foliis quam eis formae typicae aliquid latioribus ; inflorescentl 
iore.—In pine forests at Coru Station, Michoacan, Mexico, alt. 
1970 m., 29 October, 1905, C. G. Pringle, no. 10,116 (type, in hb. 
Gray). This locality is only about 48 km. to the west of Patzcuaro, 
which was Hartweg’s original station. 
' Heliotropium calcicola Fernald, n. sp., frutex gracilis 6-15 dm 
altus; cortice brunneo exfolianti; ramulis albido-strigoso-puberulis ; 
foliis lanceolatis utroque attenuatis breviter petiolatis apice mucronatls 
cum pilis minutis et lucidis utrinque obtectis 2-4.5 cm. longls 
3-10 mm. latis margine revolutis ; spicis terminalibus et lateralibus 
geminis 0.5, maturitate usque ad 2, em. longis; pedunculis grail 
1.3-2 em. longis canescentibus; calyce 1.5-2.5 em. longo cum pus 
minutis adpressis canescenti, lobis lanceolatis ; corolla anguste pean 
lata 3 mm. longa adpresse setulosa, lobis ovatis acuminatis ; stylo nullo 5 
