68 CARL SKOTTSBERG 



rum lamina angustissima, filiformi-involuta, sulcato-striata, parum vel vix hir- 

 sutulo-inspersa, ad 7—8 cm longa, vagina dense sulcato-striata, ore albido-pilosa; 

 culmi graciles tenues caespitem valde superantes ad 35 cm alti, erecti vel 

 parum geniculati, laeves, nodi glabri; inflorescentia e vagina suprema longe 

 exserta, vagina suprema 3 — 5 cm longa, lamina ad 3 cm longa; internodium 

 sequens ad 10 cm longum, vagina pluries brevior; inflorescentia depauperata 

 3 — 7 cm longa simpliciter racemosa, spiculis paucis breviter pedicellatis com- 

 posita, vel ad basin inflorescentiae ramulus bispiculatus; spiculae ad 6-florae 

 (flore supremo parum evoluto), glumis vacuis circumdatae; giumae vacuae lan- 

 ceolatae, apice acutiusculae vel obtusiusculae, 9 — 10 mm longae, inferior superi- 

 orem basi amplectens, parum vel vix longior, giumae medio tantum nervosae, 

 margo latus enervius, nervi 5, in inferiore et 7, virides, prominentes, approxi- 

 mati; gluma florifera expansa elliptica, cum callo (internodio rhachillae) albido- 

 barbato, 1 — 1,5 mm longo decidua, sine lobis lateralibus 4 mm longa, lobi 

 laterales lanceolati, sensim sat aequaliter angustati et aristiformi producti, arista 

 inter lobos 3 mm supra basin giumae orta, pars inferior brunnea, 2—3 mm 

 longa, cum lobis lateralibus ± connata et vix vel non torta, pars superior ad 

 6 — 7 mm longa, obscure viridis; nervi laterales utroque latere 3, virides, pro- 

 minentes, in lobos laterales excurrentes, gluma basi longe albido-pilosa, praeterea 

 ad marginem utroque latere fasciculo pilorum albidorum insertionem aristae 

 parum superantium instructa; palea brevis, ovalis, apice truncata et leviter bilo- 

 bata, 2,5 — 3 mm longa, nervi marginales; caryopsis ambitu ovalis, crassa, com- 

 pressa, latere hili applanata ad parum concava, 2 mm longa. 



Only seen once, very scarce on the slope of Mt. Katiki near the summit 

 (no. 658). There is more material in the Albatross collection; the label runs: 

 »summit of Rano Kao»; »common throughout the island* (no. 51!) I do not 

 think the latter statement is quite correct: even if the season was rather un- 

 favorable during our visit, this grass is too conspicuous to be overlooked, and 

 it was not observed by FuENTES. 



Dr. PlLGER remarks on the affinity: »Die neue Art ist venvandt mit der 

 chilenischen D, chilensis Desv., aber doch durch charakteristische Merkmale 

 unterschieden: bei D. cliiloisis ist die Vorspelze verhaltnismass'g langer und 

 nach der Spitze zu verschmalert, die Seitenlappen der Deckspelze sind nach 

 aussen zu breiter, fast geflugelt, die Nerven treten nur schwach hervor und die 

 Rander der Deckspelze sind gleichmassig behaart, vvahrend bei der neuen Art 

 2 Haarbiischel hervortreten, die mit ihren Spitzen etwas iiber die Einsatzstelle 

 der Granne hervorragen.» 



Area of distribution: Endemic. 



Eragrostis Host. 



9. E. elongata Jacq. — Syn. E. diandra Steud., Fuentes 1. c. 



Albatross nos. 8! 24! Slope of Mt. Katiki; round Hanga Ho Orno, on 

 lava fields (no. 645); between the north coast and Puhi, frequent on small red 

 tufa hillocks. 



Area of distribution: East India, Polynesia. 



