30 BOTANY OF THE VOYAGE OF THE SULPHUR. 
Affine quidem P. lineari DC, sed multo gracilior et involucrum diversum. Rami floriferi semipedales ad 
pedales, tenues, striati, rigiduli, apice in ramulos 2-3 breves monocephalos divisi- Folia 1-1}-pollicaria, 
pleraque angustissime linearia, acuta, viridia, eglandulosa ; nonnulla paullo latiora, utrinque acutata, et hinc inde 
glandula una alterave majuscula notata. Pedunculi fructiferi vix apice dilatati. Involucrum 4 lin. longum ; 
squamz a basi ad apicem subeequilate, obtuse, margine anguste scariosee, non mucronate, dorso gerentes 
glandulas circa 6 parvas lineares seepe per paria dispositas. Flores in capitulo 12-15, involucro subdimidio 
longiores, tubo longo infundibuliformes, extus scabriusculi, dentibus 5 equalibus lanceolatis patentibus. 
Anthere breviter exsertee. Styli rami longi, subulati, hispidi. Acheenia tenuia, angulata, longiuscule rostrata, 
pilis minutis appressis scabrella. Pappus sordidus, multisetus. 
The form of the involucres, corolla, and seed are those of De Candolle’s first 
group, but the scales of the involucre are blunt and slightly scariose at the top, 
as in his second group. 
97. Poropnytivm tridentatum, sp. n., fruticosum, humile, ramosissimum, glabrum, foliis lanceo- 
latis cuneatisve, inferioribus pinnatilobatis, superioribus tridendatis trilobisve, lobis dentibusve 
plerisque glandula setigera terminatis, capitulis ovato-oblongis, squamis apice scariosis, acheenio 
erostri vix scabriusculo,—Bay of Magdalena. 
Frutex semipedalis vel paullo altior, basi rigide ramosus; rami floriferi 3-4 poll. longi, foliosi, apice 
in ramulos 2-4 breves monocephalos divisi. Folia pleraque 3-5 lin. longa, basi angustata ; supra medium paullo 
latiora, apice in dentes vel lobulos 3 lanceolatos divisa; pauca vegetiora 6-8 lin. longa et preeter dentes 
terminales utrinque secus marginem lobulis dentibusve 1-2 remotis aucta ; dentes omnes lanceolati, glandula globosa 
breviter setigera terminati, vel rarius acuti mutici eglandulosi ; folia caterum crassiuscula, eglandulosa. Invo- 
lucra 4 lin. longa. Squame latiuscule, margine scarioste, apice scarioso-appendiculate,, obtuse, dorso gerentes 
glandulam unam alteramve majusculam prominentem ad basin partis scariose#. Flores numerosi (circa 40), 
involucrum vix superantes; corolle tubulose, dentibus subpatentibus obscure bilabiatis. Acheenia brevia, 
striatula, pilis minimis vix scabrella. Pappi setae numerose, serrulato-barbellate. Styli rami subulati, hispidi. 
98. Baunia latifolia, sp. n., procumbens, araneoso-lanata, foliis oppositis trilobis, lobis obovatis 
cuneatisve subincisis, pedunculis elongatis monocephalis tomentosis.—Bodegas. 
, Habitus fere B, lanatw. Caules elongati, procumbentes, ramulis apice adscendentibus, lana araneosa densa 
nivea obtecti. Folia 6-15 lin, longa, petiolo alato basi amplexicauli dilatato, ultra medium trifida, laciniis latis 
dentatis vel iterum trifidis, rugosa, supra tenuiter subtus dense araneoso-lanata, rarius demum denudata, novella 
lana gossypina involuta. Inflorescentia Bs lanate. Pedunculi crassiores. Capitula paullo majora, late cam- 
panulata.  Involucri_ squame oblongo-lanceolate, arcte appressee, biseriales, subwquilonge, extus albo- 
tomentosee. Ligulee circa 12, tubo viscoso-hirto, lamina oblonga apice vix 2-3-dentata. Flores disci numerosi; 
corollee tubus infra medium tenuis viscoso-hirtus, superne in faucem tubulosam subglabram aipliatus, dentes 
5, breves. Genitalia subinclusa. Styli rami truncati, exappendiculati. Achenia tetragona, glabra. Pappi 
squamelle 4, brevissime, ovate, hyaline. 
99. HeLentum puberulum, DC.—Torr. et Gr. Fl. N. Amer. 2. p- 385.—San Francisco. 
100, Hemizonta ramosissima, sp. n., glabra vel pilis raris subhispida, glanduloso-viscosa, caule 
diffuso intricato-ramosissimo ramulis fasciculato-polycephalis, foliis lanceolatis linearibusve inte- 
gerrimis vel paucidentatis, ligulis 5, paleis receptaculi ad medi ‘ ares 
fiers Ran, Diego. p medium connatis, pappi disci squamellis 
Al. fasciculata affinis, sed imprimis capitulis floribusque duplo minoribus distincta. Caules 1-2-pedales, 
