14 BOTANY. 
Umbels compound on long peduncles, Flowers numerous, showy, whitish with red central 
lines. Posé creek ; September. 
ERIOGONUM ROSEUM, nova species. Herba sesquipedalis erecta virgato-ramosa arachnoideo- 
tomentosa, bracteis trinis parvis appressis ovato-acutis fusco-rubentibus, basi foliosa, dein scapi- 
formis multumque infra medium in bractearum axillis trifurcata, verticillo unico trifoliato, nunc 
ramulos ac folia prodente, cum brachiis alternante, nonnunquam capitulis ime furce insidentibus; 
abinde solum ad nodos ramiferos foliis singulis parvis. Folia anguste spathulato-ovata, margine 
undulata, in petiolum longum attenuata, superne rubentia, radicalia cum pedicellis 14-2” longa. 
Involucra sessilia plerumque solitaria, tubuloso-campanulata compressa secundum ramos subse- 
cunda, nonnunquam et terminalia. Flores aghin exserti incarnati vel purpurei. Paleolew 
capillares incluse. 
The whole plant, except the flower, covered with a white arachnoid-tomentum. Stem about 
1} foot high, virgately branched, with a whorl of three bracts at each node, (besides occasional 
leaves,) leafy at the base, hence scapiform and trifurcate below the middle, with the prongs 
opposite at the bracts, and alternate to a solitary ternate whorl of leaves, which sometimes 
produce accessory branches and leaves from their axils, and sometimes capitula seated in the very 
centre of the trifurcation ; a small solitary leaf at each further branching. Leaves narrowly 
spathulate-obovate, undulate at the margin, attenuate into long petioles, with a reddish tinge ; 
radical leaves 14—2 lines long, including the petiole. Involucres sessile, mostly solitary, 
tubuloso-campanulate, peta al unilateral along the branches and terminal, Flowers small, 
glabrous, exserted, pinkish or purpurascent. Floral. chaff capillary included. Posé creek ; 
September. . wen 
ErrocoNuM PLUMATELLA, nova - gpecies. (Specimina incompleta.) Caulis vix pedalis, dense 
floccoso-tomentosus, rami divaricati, spiculis densis (cum internodiis vix 3-linearibus) pinnati. 
Folia * * * * * Bractez trine, patentes in spicis triangulares, in ramis oblongo-lineares, obtuse. | 
Involucra solitaria, campanulata, segmentis rotundatis, incarnato-fusca. Flores albi, lobis 
obovatis. Palez pallides, lineari-lanceolate vel truncate, apice denticulate, pube longa 
sparsa exserta. a 
(Specimens rae we Stem hardly a foot high, densely tomentose, terminating in 
divaricate panicles, pinnate with crowded spikelets, internodes scarcely 3 lines long. 
Leaves, (apparently all radical.) Bracts in threes spreading, those of the spikelets triangular, 
those of the branches oblong linear obtuse. Involucres solitary, campanulate, with rounded 
segments, and of a reddish-brown color. Flower white, with ovate lobes. Paleole linear 
lanceolate truncate, denticulate at tip with a sparse, but exserted pubescence. Posé creek ; 
September. 
Errogonum Herrmannt, (EZ. geniculatum Journ. Acad. Phil., vol. 3, es 1,) nova species. 
(Specimina incompleta.) Caulis circiter pedalis, (aque ac involucra,) pallide virens glaberri- 
musque, ramis divaricatissime furcatis. Folia. * * * * * Bractew trine minute late 
triangulares, patentes. Involucra solitaria, parva, campanulato-subglobosa. Flores magni 
involucris duplo longiores, pallide incarnati, lobis exterioribus orbiculato-obcordatis interioribus 
obovato-linearibus acutis. Paleolx lineares lanceolate: cuneate, apice rubente truncato dentic- 
ulato, involucrum equantes, pube glandulosa. 
Stem about a foot high, and, as well as the involucres, pale green aad very glabrous ; 
branches very divaricately forked. Leaves * * * * * (apparently only radical.) Bracts in 
threes, minute, broadly triangular, spreading. Involucres solitary, small, campanulate, 
