80 CONTRIBUTIONS TOWARDS A 
oblongum, compressum, piloso-hispidum. Pappus pilosus, per- 
sistens, biserialis, setis scabridis subinæqualibus cæterum inter se 
similibus. 
« The only two specimens which I possess of this plant are both 
in rather a young state, but the flowers are perfectly developed. 
"In both there is the rudiment of a branch in the axil of a leaf about — : 
the middle of the stem. The old plant may therefore be slightly 
branched. The radical leaves, if any exist, I have not seen, and 
those at the base of the stem are of a scaly nature. 
ERIGERON, Jinn. 
4923. E. (Huerigeron) scaberrimum; caule herbaceo erecto ramoso 
sulcato-striato pubero-scabrido, foliis radicalibus longè petiolatis, 
caulinis sessilibus amplexicantibus oblongo-lanceolatis acutis 
grossé mucronato-dentatis utrinque setulis densis aspero-scabris, 
summis multo minoribus inciso-serratis, capitulis ad apices ramu- 
lorum solitariis corymbosis, involucri squamis lanceolatis acumi- 
natis striatis extus dense setoso-tomentosis margine membrana- 
ceis, ligulis disco duplo et ultra longioribus. 
Has. In marshy Campos near Villa do Principe, Province of Minas 
à. Geraës. Aug., 1840. 
Herba 6-pedalis. Folia radicalia sesquipedalia, 3—33 poll. lata. 
Ligulæ anguste, lineares, apice 2—3-dentatz, albæ, 9 lin. longæ. 
Corolle disci flavæ. Anthere ecaudatæ. Achænium compressum, 
. margine costatum, glabrum. Pappus rufescens. `. 
This species agrees in habit with Æ. sulcatum, DC., and with 
my Z. alpestre and palustre, differing from them principally in its 
.. very scabrous leaves, the upper ones inciso-serrated, and in its sca- 
. brously tomentose involucral scales. 
` 
PLATYSTEPHIUM, Genus novum. 
* Char. Gen. Capitulum multiflorum, radiatum, floribus radii uni- 
seriatis, , ligulatis, fcemineis, disci tubulosis hermaphroditis. Tn- 
 HUmoneram papanpis, biseriale, squamis tanaeilaties ann. 
