K. Krause: Eine neue Loranthacee au8 Zentralamerika. 44 1

subsimplex, vel ramis erectis vel adscendentibus, in plantis redundantibus, permaturis interdum late divaricatis vestitus, linois pubescentiae longi- tudinalibus de foliis decurrentibus, praeterea glaber. 3-5 dm altus. Folia anguste usque lineari-lanceolata, 6-10 cm longa, 6-10 mm lata, ambobus extremitatibus angustata, sessilia, minutatim serrulata vel in- tegra, marginibus ciliatis, praeterea glabra. Inflorescentia paniculata, contracta. Involucrum 6-8 mm altum, 8-10 mm latum, bracteis eius in 4 series dispositis, lanceolatis, acutis, cilio- et scarioso-marginatis, praeterea viridibus. Flores radiati 25-35, 5-8 mm longi, pallide vio- laceo-purpurei vel albi. Pappus sordide albidus. - Species easily con- founded with this are A. Zautw Lunell, which is best recognizod by its widely spreading inflorescence; A. sdicifdius Lam., which has thickish. broader leaves and the disk of the hoad 1 cm high and 1 cm broad, and white pappus; A . Eongifdius Lam., which has the bracts of the in- volucre glabrous, subequal, only the outermost sometimes shorter, and pale pappus; and A . Zaeteuirens Greene, which has rather few heads, broader leaves, involucral bracts with white mid-rib, and outer bracts broader than the inner. - N o r t h D a k o t a : This species has a predi- lection for the margins of sloughs. The type specimen was collected by the writer on September 6, 1910, in high grass around a slough, not far from Leeds. Benson County. The plant is a representative of ad- vanced autumn, often defying tho night frosts until early October, and surpassed in durability only by Brachyactis angustus.

LXVI I I . Eine neue Loranthacee aus Zentralamerika. Von K. KrauRe. (Originaldiagnose.)

Phthirusa Pittieri Krause, spec. nov. Rami teietes modice validi cortice griseo vel brunneo-griseo laevi

vel hinc inde densiuscule lenticelloso obtecti. Foliorum petiolus supra tota longitudine latiusculc canaliculatus basi paullum incrassatus. 0,8-1.5 cm longus; lamina rigida coriacea anguste ovata vel ovato- oblonga apice acumine angusto acuto interdum paullum obliquo, 1,5-1,8 crn longo praedita, b u i rotundato-obtusa, 1,2-1,8 dm longa, tertio vel quarto inferiore 5-9,5 cm lata, nurvis lateralibiis 7-10 supra prominulis subtus plerumque vix conspicuis angulo fere recto vel superioribus angulo acuto a costa validiuscula supra imprcssa subtus distincte prominente abeuntibus marginem versus arcuatim adscendentibus percurea. Inflorescentiae spicatae circ. 6-8 cm longae, in axillis foliorum plures collaterales. Flores dioici parvi brovissime pedicellati vel sessiles in glomerulos paucifloros 0,8--1,5 cm longe remotos dispositi. Calyculus brevis margine obsolete denticulatus. Tepala flavescen tia vel in siccitate atro-brunnea crassiuscula subcarnosa oblonga dimidio superiore paullum

442 K . Krause: Eine new Loranthacee aus Zent.ralamerika

dilatata apice acuta, 4 mm longa, 1,2-1,6 m m lata. Staminurn filamenta oblonga fere tota longitudine tepalis adnata, circ. 3 mm metientia; an- therae ellipsoideae obtusae vix 1 mm longae. Ovarium sterile depressum stilo filamentis subaequilongo crassiusculo coronatum. Raccao ovoideo- globosae in siccitate 4-6 mm diarnetientes.

S u b a e q u a t o r i a l e a n d i n e P r o v i n z : P a n a m a : Provinz Colon, liings des Rio Fato in Wiildern und Dickichten, uni 10-100 m ii. M., als Parasit auf Sloaneu-Arten. (H. P i t t i e r no. 3911 - mit Bluten und Friichten gesammelt im Juli-August 1911), unterhalb Bismarck (R. S. \ \‘ i l l iams no. 561 - bliihend im hlfrz 1908).

Dio Art gehort infolge dor Verwachsung der Ytaubf‘dden mit den Tepalen in dio Sed. Euphthirirsa Engl. und unterscheidet sich von den meisten anderen hierher gehiirigen Spezies durch die verhaltnismiissig grossen, mit einer deutlich abgesetzten. ziemlich langen Spitze rer- sehenen Blatter.

Dic erfteii fiinfjig Defnben ber

Ordjibacecte ZXooac et Criticae DOH

2-2. S@le@ter fiiib als Sonberabjiige i it bcfdpinfter ZaQI nur uorn Xtiufer felbft geqeir Doreinfenbung bcs Be!rages bur4 bie Xebaftion bes Xepertoriums ju bejietp~. Dicfe fiinfjig Defabeii follen in b~i i I i4er De i fe toie bie Diagnojcn uoii Z?la_rimoto,icj einei i eigenen 23anb barftellen, befien Seiten fynbpaginier! finb. &in befonberes gebrucftes Xegiffer ift baju an. gefertigt worbeii, fo batj bie Uuffinbung ber 23ef+reibnng jtber Ur! ogne SdpiorigPciten errnbgli4t tuirb.

Da in biefeir Defaben neue Dr@tbeen aller &rbfetIe btfprrbeI! toerben, ift biefe Sonberausgabe fiir jeben Spejialiffen wie awn! fiir jebeii floriften fropif4er Bebiete noii grotjeni tDerte.

Die ffinfjig Defaben fpnbpaginier! (328 Seitm ftarf) niit ditel: b h t i unb Xegifter toften 23 mar?, fiir bas UusIanb Sd#ling ober ,iO franfs ober 6 ?.; DoUars.