254 Mr. D. Don’s Descriptions of new Genera and Species 
2. D.? serrata, folis ovato-lanceolatis acutis dentato-serratis 
penninerviis, floribus glomeratis. 
Carduus mitis. Herb. S. et M. 
In Mexico.  Sesse et Mocinno. h . 
Frutex erectus, ramosus. Rami sulcato-angulati, undique om- 
nino albo-lanati. Folia alterna, brevissimé petiolata, spitha- 
maa, ovato-lanceolata, acuta, dentato-serrata, dentibus tri- 
angulari-ovatis, mucronatis, leviter antrorsüm uncinatis, aliis 
minimis interjectis, penninervia, nervis obliqué transversis, 
costáque media valida prominentibus, suprà demüm calva, 
viridia, punctisque elevatis copiosissimis asperiuscula, sub- 
tùs land albA densé implexá copiosissime vestita, 5—7- 
pollicaria, 2—3 uncias lata, basi acutá integerrimá. Petioli 
crassi, brevissimi, vix sesquilineam longi. Flores terminales, 
plures (5— 10), sessiles, glomerati. Involucra globosa, dense 
- lanata: squamis multiplici ordine lanceolatis, acuminatis, 
rigidis, adpressis. Receptaculum planum, scrobiculatum, 
angulis elevatis, acutis exasperatum. Flosculi perfecti non- 
düm observati: pappo setaceo, scabro. 
Having only seen specimens of this with the capitula in a very 
young state, it has been placed here solely from the habit of the 
plant itself and from the structure of its involucrum. What relates 
to the floret still remains s undetermined. . 
nxrROGL NINE | 
Receptaculum aculeatum. | Flosculi disci tubulosi, hermaphroditi ; 
radii ligulati, foeminei. 
Involucrum .subglobosum, multiplici ordine imbricatum : squamis 
lanceolatis, acuminatis, coriaceis, adpressis. Receptaculum 
aculeatum : aculeis subulatis, callosis, rigidis, brevibus, in 
circulis plurimis dispositis. Flosculi disci hermaphroditi, 
tubulosi, 
