410 “PROCEEDINGS OF THE AMERICAN ACADEMY. 
patenteque pubescentibus plus minusve rubescentibus fere filiformibus — 
sed basim versus induratis et lignescentibus, nodis hirsutulis; foliis 
anguste linearibus subfiliformibus 1-nerviis glabris margine revolutis 
apice acutissimis 1-2 cm. longis; vaginis brevissimis pauci- (saepius 
2-) setis ; verticillis remotis plerumque 2 subglobosis ca. 1 em. dia- 
metro; calyce longe 2-lobato, lobis lanceolato-linearibus acutissimis 
herbaceis sursum fimbriato-ciliatis, dentibus intermediis multo brevi- 
oribus scariosis ; corolla alba hypocraterimorpha 4-loba 2.5 mm. longa, 
lobis ovato-oblongis apicem versus hispidis, tubo intus basim versus 
pubescente ; staminibus 4 in summa parte tubi affixis, leviter exsertis; 
fructu et seminibus non visis. —Britiso Honpuras, on dry sandy 
pine ridges, 23 October, 1905, Prof. Morton E. Peck, no. 180 (type, 
in Gray Herb.). From its 2-lobed calyx this species would seem to 
stand near the polymorphous B. verticillata (HBK.) Cham. & Schlecht. 
but with all due recognition of the extraordinary variability of that 
species, it does not seem possible that this delicate filiform plant 
‘should be included among its forms. Among the distinctions noted 
is the form of the stigma, which in B. verticillata is barely lobed, but 
in B. Peckiana distinctly bifid with short but actually filiform lobes. 
BoRRERIA VERTICILLATA (L.) G. F. W. Mey., var. thymiformis, 2- 
var., pumila 6-8 cm. alta subglabra; caulibus multis gracilibus laxis 
flexuosis a caudice crassa nigrescente oriuntibus ; foliis ovato-ellipticis 
7-11 mm. longis 2-5 mm. latis; capitibus parvis ca. 8 mm. diametro 
terminalibus.— Mexico: about 29 km. southwest of the city of 
Oaxaca, alt. 2300-2900 m., 10-20 September, 1894, HZ. W. Nelsom, 
no. 1410 (type, in Gray Herb. and Herb. U. 8. Nat. Mus.). This 
plant, although maintaining all the floral traits of the species, 18 50 ’ 
strikingly different from the usual forms as to be well worthy of varietal 
distinction. Were it not connected with the more typical forms by 
such intermediates as L. ©. Smith’s no. 40 from the Cuilapan Moun- 
tains, it could certainly pass as a distinct species. ; 
Erigeron Deamii, n. sp., suffruticulus gracillimus pumilus 1 dm, 
altus irregulariter a basi ramosus, ramis teretibus strigosis foliosissiimis 
ascendentibus saepius 1-capitatis; foliis linearibus (infimis anguste 
oblanceolatis) ca. 1 em. longis ca. 1 mm. latis utrinque strigilloe”” 
hispidulis 1-nerviis saepe in axillis proliferis ; pedunculis filiformibus 
ca. 3 cm. longis rectis vel apicem versus plus minusve nutantibus 
l-capitatis subappresse pubescentibus ; capitibus hemisphaee 
8 mm. diametro ; involucri squamis argute linearibus atten 
aequalibus media parte viridibus hirsutulis margine pal 
ca. 4 mm. longis; flosculis disci numerosis, corollis 2.3 mm. _ : 
apicem versus flavidulis, achaeniis compressis sparse hirsutulis 1.3 mi a 
lidis scarios$ 
