ROBINSON: CONTRIBUTIONS FROM GRAY HERBARIUM. 253 
Benth. — Costa Rica: at the foot of Carrizal, “ massif” of Barba, 
-alt. 1600 m., January, 1889, H. Pittier, no. 778. 
E. pratense, Klatt, Bull. soc. bot. Belg., xxxi, pt. 1, 193 (1892), 
is scarcely to be distinguished from 2. pycnocephalum, Less., an 
annual and very variable weed. . pratense appears to represent 
merely a trifling variation with more copious pubescence and some- 
what shorter petioles than usual in the species. 
E. pruNELLAEFoLIUM, HBK., Nov. gen. et spec., iv, 123 (1820). 
Some authentic fragments of this hitherto little understood Mexican 
species were kindly sent from the Royal botanical museum in Ber- 
lin for deposit in the Gray herbarium. These show the plant to be 
exactly what has later been redescribed as 4. Saltivarii, Sch. Bip. 
(see Robinson & Seaton, Proc. Am. acad., xxviii, 108, 1893), and 
£. abronium, Klatt, Ann. k. k. naturh. Hofmus. Vienna, ix, 355 
(1894). The species has somewhat peculiar corollas with very slen- 
der proper tube and suddenly expanded relatively broad cup-shaped 
throat, which especially near the limb is covered with loose pubes- 
cence. To this species I would refer Schaffner’s no. 298, Bour- 
geau’s no, 818, and Pringle’s no. 4286, all from the state of Mexico ; 
also Pringle’s no. 5699 from the mountains of Oaxaca, and his no. 
7609 from Hidalgo. 
E. psoraleum, spec. nov. Lignosum, ramis teretibus glabris, 
ramulis leviter 6-angularibus striatis squamulis minutis transversis 
tectis ; foliis oppositis late lanceolatis integerrimis pinnatim nervatis 
utrinque glabris utroque acuminatis 4-9 cm. longis, 1.4-3 cm. latis, 
petiolo glabro 0.7-1.5 cm. longo; capitulis 5-floris breviter pedicel- 
latis paniculam patente ramosam formantibus, bracteis lanceolato- 
linearibus parvis, involucri squamulis scariosis stramineis vel saepe 
roseis margine ciliolatis praeterea glabris tenuiter striatis valde 
inaequalibus 3—4-seriatim imbricatis, exterioribus perbrevibus ovatis, 
interioribus ovato-oblongis obtusis apice paulo ampliatis; corollis 
glabris 4-5 mm. longis roseis, tubo gracili 2-3 mm. longo, faucibus 
valde sed gradatim ampliatis limbo 5-partito paulo longioribus ; 
achaeniis olivaceis glabris basi tenuiter attenuatis 2 mm. longis 
pappo simplice sordido corollae superante coronatis.— Costa Rica: 
as a “false epiphyte” on a tree at La Palma, alt. 1459 m., Septem- 
ber, 1898, Ad. Tonduz, no. 12,589 (type in hb. Inst. Sine ceoaret: 
San José, Costa Rica, fragments and tracing in hb. Gr.). 
This species considerably resembles Z. daleoides, Hemsl., but 
differs in its scaly branchlets and in other ways. 
