aceis; ligulis paucis (flavis) brevibus; disci corollis atro-purpureis, paleis obtusissimis vel truncatis ; acheniis (immaturis) undique villosissimis 1 - 2-ari-tatis, aristis basi villosissimis. - Sierra Abayo, New Mexico? Dr. Newberry in McComb's Expedition. Heads 2 to 4, on rather short peduncles, only 4 lines high; the oblong rays hardly exceeding the disk.

ENCELIA (GEREA) ALBESCENS. Herbacea ? pube sericea brevi scabrida argenteo-canescens; foliis (ramealibus) alternis ovato- seu lanceolato-oblongis subintegerrimis basi subcuneata trinervatis breviter petiolatis; capitulis solitariis longius pedunculatis; involucri biserialis squamis lanceolatis æqualibus canescentibus; floribus luteis; ligulis 8-10 obovatis majusculis; paleis receptaculi acutis; acheniis (immaturis) cuneato-oblongis præter margines creberrime sublonge ciliatos fere glabris; pappo 1-2-aristellato nudo. — In the western Mexican province of Sonora, Dr. Edward Palmer, coll. 1869, no. 21. Leaves in the specimen less than an inch long, the short petioles not dilated at base. Rays half an inch long. Young achenium slightly emarginate at the apex, the dense ciliate hairs of the margin in length scarcely equalling half its width, or at the summit rather longer, and about half the length of the longer delicate naked awn of the pappus, the other awn seldom longer than the hairs, often shorter or obsolete. In aspect and in the nature of the pubescence this very much resembles another scarce Composita of the same region, namely, Viguiera nirea (supposing it to be the Encelia nirea of Bentham, Bot. Sulph.), the plant described by me in Bot. Mex. Boundary as Helianthus tephrodes. That, by the pappus and ovary, is evidently a Viguiera. The present plant is a good Encelia, of the Geraa section by the pappus, although the awns are unusually delicate and one of them inclined to disappear. The villous ciliation of the achenium, although shorter than in its congeners, is too long and dense for a Simsia.

ENCELIA (BARRATTIA) CALVA, Simsia calra Gray, Pl. Lindh. 2, p. 228, is remarkable for the pair of foliaceous stipule-like appendages at the base of uniformly oppo-ite leaves. These are altogether wanting in

Herbacea? ramosa; ra

ENCELIA (BARRATTIA) GHIESBREGHTII. mis gracilibus foliosis; foliis omnibus oppositis angusto-ovatis acuminatis rariter serratis basi truncatis vel subcordatis supra hirtello-velutinis subtus molliter canescenti-sericeis; petiolis brevibus inappendicu latis; involucro campanulato Simsia, squamis lineari-subulatis villosis

glandulosisque, interioribus discum adæquantibus; floribus luteis, ligulis 10-12 oblongis (subtus lividis ?); paleis receptaculi cuspidatoacuminatis; acheniis (immaturis) oblongis glaberrimis apice truncatis calvis. - Mountain forest near Chiapas, S. Mexico, Ghiesbreght, no. 568, of recent distribution; very scantily collected. Branches slender, glandular-scabrous and beset with spreading villous or hirsute hairs. Leaves one or two inches long, the pubescence appressed, that of the lower surface especially soft and satiny. Involucre half an inch high. Rays barely half an inch long. Mature akenes not seen; the immature ones flat, truncate at summit, not at all emarginate or bidentate.

COREOPSIS Linn. In the Genera Plantarum this genus is probably extended too far when made to comprise groups of species with fertile rays. At least in the Flora of California I am constrained to reinstate two genera which are peculiar to that region, and in which no true Coreopsis occurs, although, indeed, the genus does cross the Rocky Mountains and reach the Pacific in a single species farther north. As to the African section Prestinaria, it might be associated with, or form a part of Diodonta. Epilepis Benth., the rays of which are said in the Genera Plantarum to be fertile, but are more correctly described in Plantæ Hartwegianæ as neutral, and those opposite-leaved South American species which I once associated with Agarista, I should still regard as belonging to Coreopsis, while I would re-establish the California genus, under the name of

PUGIOPAPPUS Gray.

Capitulum multiflorum, heterogamum; floribus radii 7-10 fere semper fœmineis, disci hermaphroditis. Involucrum duplex Coreopsidis. Receptaculum planum, paleis scariosis cum fructu deciduis onustum. Ligulæ latæ, truncatæ, plurinerviæ. Corolla disci tubo tenui versus apicem annulato, limbo ampliato 5-lobo. Styli fl. radii breves, nunc intra tubum ligulæ retracti; fl. disci ramis cono brevissimo superatis. Achenia plano-obcompressa, ovalia vel oblonga, radii glaberrima, marginata vel alata, calva; disci villosa vel ciliata, cum palea receptaculi adpressa basi cohærente decidua, pappi aristis paleolisve longis triquetris pugioniformibus superatis. Herbæ annuæ, Californicæ, glaberrima, foliis alternis 1-2-pinnatipartitis, lobis linearibus, capitulis solitariis longe pedunculatis, floribus aureis. Agarista DC. Prodr. 5, p. 569; Torr. & Gray, Fl. 2, p. 337, non Don. Pugiopappus Gray in Bot. Whippl. p. 48, & Proc. Amer. Acad. 6, p. 545.

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It was long ago remarked, in the Flora of North America, that ovaries of the ray in Agarista calliopsidea DC. are ovuliferous. I have lately seen, in a cultivated plant, that they are equally if not more fertile than those of the disk. The specimens under cultivation showed well-formed styles to the ray-flowers; but these I find are present in all the indigenous specimens I possess, although commonly short or even included in the tube. Agarista DC. and Pugiopappus are therefore congeneric. As Don's Agarista in Ericaceae is earlier, and is to be restored, the present reinstated genus naturally takes the name of Pugiopappus. The species are: —

PUGIOPAPPUS CALLIOPSIDEA. Caule 1 - 2-pedali inferne folioso; capitulo majore; involucri exterioris squamis ovatis basi coalitis; ligulis cuneato-obovatis (semipollicaribus ad pollicarem); disci corollis tubo piloso-annulato; achenis radii latis ala tenui cinetis, disci margine intusque longe mollissime villosis.- Agarista calliopsidea DC.

PUGIOPAPPU'S BREWERI. Minor; foliorum lobis angustissime linearibus; involucri exterioris squamis linearibus; ligulis oblongo-spathulatis (semipollicaribus); annulo corollæ disci obscuro imberbi; acheniis radii præcedentis, disci secus margines costamque paginæ interioris tantum longe villosis; pappi aristis validioribus achenio dimidio brevioribus. — This is the plant, collected by Professor Brewer (no. 241)" on dry hills at San Buenaventura," below Santa Barbara, which in Proc. Am. Acad. 5, p. 545, I wrongly referred to P. Bigelorii. It is nearer the preceding.

PUGIOPAPPUS BIGELOVII Gray, 1. c. Humilis; foliis subradicalibus carnosulis, segmentis paucis angustissime linearibus; capitulo in pedunculo scapiformi parvulo; involucri exterioris squamis lato-linearibus; ligulis quadrato-oblongis; annulo corollæ disci imberbi; acheniis radii oblongis ala crassiuscula marginatis, disci (ut videtur plerumque sterilibus) tenuiter ciliatis. — The style in the disk-flowers is articulated above the base, and the thickish basal portion is less deciduous, in all three species. In those, also, the disk-achenia, or some of the central ones, are disposed to be infertile.

LEPTOSYNE DC., with its three genuine species and Tuckermannia of Nuttall, which I long ago referred to it, has perhaps still greater claim to be regarded as a good genus. L. Douglasii DC., L. Stillmanii Gray, and L. Newberryi Gray, differ chiefly in some details of flowers and fruit; in the latter the cup or little border which answers to pappus is almost obsolete. There is no trace of it in the remark

able section Tuckermannia, L. maritimia Gray, which is reinforced by a succulent woody-stemmed species of the Californian Islands, L. gigantea Kellogg. This, however, has not yet flowered here in cultivation. It may be only an insular variety of the other.

Although not here in its proper place, I close the present portion of this article with the characters of the following interesting genus:—

MESONEURIS, Nov. Gen. Senecionidearum.

Capitulum homogamum, multiflorum, floribus hermaphroditis tubulosis. Involucrum campanulatum, bracteolis lineari-filiformibus paucis laxis stipatum; squamis 12-15 biseriatis æqualibus oblongo-lanceolatis, medio concavis subherbaceis 3-5 nerviis, basi incrassatis (carnosis?) marginibus pl. m. scariosis. Receptaculum convexiusculum, epaleatum, fimbrillis subulatis inter flores. Corolla hypocraterimorpha; limbo usque ad tubum angustum æquilongum 5-partitum, lobis linearibus marginibus æstivatione induplicatis, medio nervo valido percursis, nervis intramarginalibus tenuissimis. Stamina fauci inserta: antheræ lineares, basi breviter bidentatæ. Styli rami crassiusculi subcomplanati, extus puberi nervo medio valido percursi, apice subtruncato magis hirtelli. Achenia cylindracea, enervia, areola epigyna (modo Senecionum) annulo magno incrassato circumdata. Pappus e setis rigidulis scabris uniserialibus corollæ tubum haud superantibus. Herba austro-Mexicana, foliis alternis bipinnatifidis, petiolo basi spathaceo-auriculato caulem amplectente, capitulis cymosis, floribus albis.

M. BIPINNATIFIDA. — Mexico, in the cold region of the mountains, province of Chiapas, Ghiesbreght, no. 805 of new collection. — somewhat robust perennial, two or three feet high, and probably often taller, with some lax and deciduous pubescence, woolly-tufted at the base of the stem. Lower leaves a foot long, including the petiole; the foliaceous sheathing auricle an inch or two in length; uppermost leaves reduced to these spathaceous sheaths. Heads half an inch long. Lobes of the corolla 2 lines long; the tube 5-nerved below, the nerves as usual running to the sinuses, their continuation within the margin of the lobes very slender: the median nerve of the lobes more prominent than in the other and rare cases in which it is manifest at all, but gradually vanishing after reaching the tube. The genus is a remarkable one on several accounts (and doubtless Senecioneous although the corolla recalls Hymenothrix): in deriving the name from the nervation, I have taken the less-used diminutive reupîs, so as not to come too near Mezoneuron.

INDEX TO VOL. VIII.