104 TLANT-E WRIGHTrANJ3. TI. 



CALYCOSERIS, Nov. Gen. 



Capitulum liguliflorum multiflorum. Involucrum campanulatum, duplex, inte- 

 rius e squamis circa 12 lineari-lanceolatis margine scariosis subuniseriatis ; exterius 

 calyculiforme, e squamis totidem brevibus laxis. Receptaculum planum, paleis 

 tenuissimis piliformibus inter flores onustum. Achenia conformia, fusiformia, crasse 

 5 - 6-costata, muricato-scabra, apice attenuato-rostrata. Pappus duplex ; exterior 

 coroniformis persistens ; interior pilosus, copiosus, setis mollibus niveis vix scabris 

 basi in annulum concretis caducis. — Herba monocarpica, liumilis, glabra ; caule a 

 basi ramoso ; foliis pinnatipartitis, lobis rhacliique linearibus ; pedunculis brevius- 

 culis monocephalis ante anthesin nutantibus cum involucri basi hispido-glandulosis ; 

 floribus roseis. 



Calycoseris Wrightii. (Tab. XIV.) — Stony hills around El Paso, abundant ; 

 March, April. (1423.) — Plant about a span high, from a slender simple root, 

 branched from the base ; the branches or stems ascending, sparsely leafy, sparingly 

 setose-glandular towards the summit. Leaves glaucescent, linear, and with few or 

 several spreading linear lobes from 2 to 5 lines in length ; the terminal lobe pro- 

 longed. Involucre half an inch long, externally sparsely beset, like the peduncle, 

 with nail-headed glandular sctEe. Ligules pale rose-color, marked with deeper pur- 

 ple underneath, half an inch long. Receptacle flat, about 25-flowered, areolate, each 

 flower subtended by a delicate capillary bristle in place of a palea : these bristles, 

 which may perhaps be compared with those of the receptacle of Andryala, are per- 

 sistent, though rather fragile, and as long as the achenia. Achenia all alike, 2i 

 lines long, terete, with 5 or 6 broad ribs separated by narrow grooves, tuberculate- 

 roughened, tapering gradually into a thickish beak which is rather shorter than the 

 body of the achenium, its dilated apex crowned with the hyaline crateriform outer 

 pappus, the edge of which is even, but multidenticulate. Inner pappus pilose, 

 bright Avhite, consisting of copious and equal, scarcely denticulate, soft bristles, all 

 rather firmly united into a ring at the base and deciduous together. — This well- 

 marked genus (as well as Anisocoma, Torr. Sf Gray in Bost. Jour. Nat. Hist. 5. t. 

 13, which agrees with it in having an exterior coroniform pappus) will hardly find 

 a place in any of De Candolle's subtribes, as they now stand. Disregarding this 

 peculiar character of the pappus, Csflycoseris would fall into Podigiese, if the setse 

 of the receptacle be taken for true paleae. But if they are of the same nature 

 as those of Andryala, the genus might be placed near Crepis and Malacothrix. 

 However, it is hardly worth while to speculate upon its appropriate place until the 

 whole tribe has undergone revision. 



Malacothrix Fendleri : nana, glabrata ; caulibus e radice exili plurimis dif- 

 fusis ; foliis junioribus parce arachnoideis, radicalibus runcinato-pinnatifidis den- 

 tatisve lobis cuspidato-mucronatis, caulinis paucis linearibus, summis integerrimis ; 

 acheniis fere cylindricis aequaliter multicostatis apice manifesto cupulato integer- 

 rimo ; pappi seta unico validiore la;vi subpersistente, cseteris scabris inferne barbel- 

 lulatis caducis. — M. sonchoides. Gray, PL Fendl. p. 113, non Torr. ^ Gray. — 

 Stony hills around El Paso, &c., abundant; March, April. (1424.) — The habit 



