26 Contributions from the Gray Herbarium 
be considered sufficient to prohibit the reference of the plant to 
Erigeron, but the form of the style-tips here enters in to confirm 
its reference to Aplopappus. The style-branches are provided with 
a conical acuminate hispid-ciliate appendage like that found in its 
near relative A plopappus Brandegei Gray (Erigeron aureus Greene), 
which is not known in Erigeron. 
Var. GLABRATUS Coult. ! Bot. Gaz. xvi. 98 (1891). — Osbertia 
Heleniastrum Greene var. glabrata (Coult.) Greene, Erythea iii. 14 
(1895); var. ? scabrella Greene ! 1. c. — Folia vix pubescentia sed 
glandulosa. Caulis abbreviatus bracteatus non foliatus dense 
glandulosus sparsissime pilosus. Involucrum parce pilosum et 
glandulosum. 
EricaMerta Nelsonii (Fernald), comb. nov. — Bigelowia Nelsonit 
Fernald ! Proc. Am. Acad. xxxvi. 505 (1901). — A radiate species, 
referable to Ericameria as these genera are now taken. H. Nel- 
sonii, which is still known only from Nelson 6494 from the 
Chihuahuan Sierra Madre, is nearest to E. pinifolia (Gray) Hall, 
but distinct in its narrower phyllaries and various other characters. 
ERICAMERIA parrasana, sp. nov. Frutex ramosus caule tenul 
cortice griseo glabro donato, ramulis juventate viridibus dense 
papilloso-glandulosis viscosis non puberulis dense foliosis. Folia 
alterna creberrima omnino non fasciculata linearia §mucronu- 
lata ut ramuli punctata et viscosa complanata supra subplana vel 
paullum concava subtus subconvexa sessilia 6-9 mm. longa 0.6- 
0.9 mm. lata. Capitula hemisphaerica ramulos foliosos breves 
0.6-2.3 cm. longos terminantia 1.7 cm. lata; discus 6-8 mm. altus 
8-(fructu) 11 mm. latus. Involucri 3-seriati paullulum gradati 
: 3.5-4 mm. alti phyllaria anguste oblonga vel oblongo-lanceolata 
acuta non mucronata praecipue supra glandulari-viscosa ceterum 
subglabra infra valde indurata coriacea albida apice appendice — 
appressa subherbacea lanceolata munita. Radii flavi (siccitate sub- 
albescentes) ca. 10 fertiles ovales 5 mm. longi 3 mm. lati apice 
tridenticulati; corollae disci flavae ca. 25 glabrae 4 mm. longae; 
tubulo in fa campanulato-infundibulif sensim ampliato, 
dentibus 5 oblongo-ovatis acutiusculis ad 1.6 mm. longis. Recep- 
taculum alveolatum. Achenia radii subtrigona disci turbinata 
gees compressa densissime_ sericeo-pilosa ad 1.3 mm. longa. 
RAM aristae ad 80 paullum inaequales non regulariter gradatae 
tellae ad 3.8 mm. longae. Styli rami elongato-lineares longe 

