238 Mr.D. Dox’s Descriptions of new Genera and Species 
become confluent. They occupy the centre of the lacinie, and, 
unlike the other plants of this family, there are no vessels ter- 
‘minating in, or branching off from the sinus. 
TYLLOMA. 
Involucrum imbricatum. Flosculi marginales unilabiati! Pappus 
capillaris : radiis simplici ordine dispositis. 
Involucrum ovatum, polyphyllum, multiplici ordine imbricatum : 
squamis integerrimis, mucronulatis, lævibus, coriaceis, ad- 
pressis ; ¿interioribus oblongis, apice coloratis. Receptacu- 
lum nudum. Flosculi marginales pauci, foeminei, unila- 
biati, vix radiati, obtusé tridentati; disci hermaphroditi, 
tubulosi, extùs sericeo-villosi, limbo bilabiati : labiis abbre- 
viatis; exteriore obtuse tridentato; interiore bifido, lobis 
lanceolatis, acutis, erectis. Stamina tubo infra medium in- 
serta: filamenta angusta, complanata, glabra, apice atte- 
nuata: anthere in tubum coalitz, basi bisete : setis longis, 
ramulosis, subplumosis: appendicula terminalis lanceolato- 
linearis, acuminata, cartilaginea, antherá ipsáà brevior. 
Stylus filiformis, glaber. Stigma clavatum, bilobum : lobis 
abbreviatis, conniventibus, crassis, obtusis, pruinosis, mar- 
gine incrassatis. Achenia trigona, papilloso-muricata. Pap- 
=~ pus capillaris, deciduus: radiis simplici ordine contiguis, 
subaiqualibus, basi. apiceque puberulis. c e 
Herba multicaulis, lanugine lava parciùs instructa. Radix? ramosa, 
annua. Caudex brevissimus. Caules procumbentes, cylin- 
dracei, purpurascentes, 2—4-unciales. Folia alterna, subses- . 
~ ilia, in apice ramulorum aggregata, ceterüm sparsa, cuneato- 
~ lanceolata, limbata, integerrima, complicata, flexuosa, valdè 
- coriacea, colore glauco cerulescentia, utrinque glandulis ma- 
| jusculis, pedi ellatis, sparsis. munita, subtùs costá validá basi 
valdé dilatatá, hine carinata, semuncialia ; ; juniora pracipu? 
suprà 
” 
aaae fi a 
