THE VEGETATION OF EASTER ISLAND 4Q7 



Lava plains of Ilauga Ho Orno. June /j — 16, Kjiy. 



A flat country near the sea; cracked basalt beds strewn with numerous 

 slabs and boulders. Plant cover more or less open, closing between the stones 

 and alonL,^ the fissures. Sporoboliis i'longatus-Ass. Plate 28 B. 



F2 Sporoboliis ilongatiis, 3 Eragrostis clongata, 2 (also pure 



Microlepia strigosa, 2 patches in moist fissures) 



Axouopiis paschaiis, l Kylliiiga b7-evifolia, 2 



DicJu'lachne sciurca, i Cynodon dactylon, i 



Cenchrus Hillebrandianus', 1 OpJiioglossuni reticulaUwi, i 



Krigeron linifolius, i » conaceiiui, i (rare) 



Paspaliiin Forsteriannm, i Oxalis corniculata, i 



Fi Digitaria sanguinalis, 4 G Euphorbia serpens, 2 



Erythraea spec? (seedlings). 



Mosses between the bunch grasses and filling small fissures: abundant 

 Bryiim aigenteum var. lanatuni and Campy lopus saxicola; less common Cam- 

 pylopus inlrojlcxus and Weisia spec. 



On the rocks and boulders: Physcia picta-Bucllia-Ass. 



Physcia picta (white), Buellia Glaziouana (straw-coloured, black fruit), B. 

 stellulata f. protolhallina (greyish-white, black fruit), Diploschistes anactinus 

 (large mouse-grey crusts), Heppia Guepini (squamulose, bronze-coloured crusts), 

 Pannelia capcrata (greyish green). 



Slopes of Maiiiiga Katiki, June 16, igij. 



A. Lower slopes, below 300 m. Deeper soil than on the plain, of a 

 reddish brown colour. Stones hidden under a dense grass cover. Sporoboliis 

 elongatns- Eragrostis elongata- Ass. 



F2 Sporoboliis elongatus, 3 Digitaria sanguinalis, 2 



Diclielachne cf. crinita, 2 Ophioglossum coriaceiun, i 



Axonopiis pasc/ialis, i » reticiilatiini, i (rare) 



Fi Eragrostis elongata, 5 G- Euphorbia hirta, i. 



Mosses not collected; »same species as in Hanga Ho Orno». 



B. Higher slopes, 300—400 m. Moister. Axonopiis paschalis-Kyllinga 

 brevifolia-hss. 



F2 Axonopus paschaiis, 3 Fj Kyllinga brevifolia, 3 

 Erigeron linifolius, 2 Digitaria sanguinalis, i 



Dantonia paschaiis, i (rare) Ophioglossiun coriaceiim, i 



G A Montia-\\V.& plant, sterile, material lost. 



Mosses as before. 



Stipa horridiila was observed in this association forming a couple of small 

 societies on the seaward slope. 



* Previously referred to C. echinattis. 



32 — 2610. The. Nat. Hist, of Juan Fernandez and Easier Isl. Vol. II. 



