148 - Rhodora [AvavsT 
Rockv HEADLANDS. 
Picea rubra Ligusticum scothicum 
Juniperus horizontalis Vaccinium Vitis-Idaea, var. minus 
Alnus mollis Convolvulus sepium, 
Deschampsia flexuosa var. pubescens 
Festuca rubra Euphrasia americana 
Tris setosa, var. canadensis Á Randii 
Arenaria lateriflora Rhinanthus Crista-galli L., 
Sagina procumbens var. fallax 
Potentilla tridentata Plantago decipiens 
Rosa virginiana ; Campanula rotundifolia 
Vicia angustifolia, var. segetalis Senecio sylvaticus 
Empetrum nigrum Solidago Randii 
Roque Bluffs is near the southern limit of Iris setosa, var. canadensis 
at Little Duck Island. This is frequent on the headlands within reach 
of the sea-spray, but it does not grow in the salt-marshes. Empetrum 
nigrum is a sprawling undershrub on many of the sea-cliffs, and is 
different in habit and size from the same plant growing in the sphag- 
num of peat-bogs. Euphrasia Randii I have found in only one place, 
close to a large diabase dike, but at Machiasport it grows over quart- 
zite, so there is apparently no lithological reason for its scarcity. 
Senecio sylvaticus is a slender annual, occasional in crevices, but never 
abundant. 
PEAT-BOGS.! 
Larix laricina Vaccinium macrocarpon 
Picea mariana "T Oxycoccus 
Betula alba, var. cordifolia Scheuchzeria palustris 
Nemopanthus mucronata Carex canescens, var. disjuncta 
Chamaedaphne calyculata *  leptalea 
Andromeda glaucophylla * limosa 
Gaylussacia baccata *  gligosperma 
- dumosa (Andr.) T. & G. | “ pauciflora 
var. Bigeloviana Fernald “ paupercula, var. irrigua 
Kalmia angustifolia “sterilis 
* — polifolia *  trisperma 
Ledum groenlandicum *  frisperma, var. Billingsii 
Rhododendron canadense Rynchospora alba 
1 In this and the following plant societies I have placed trees and shrubs before the 
herbaceous plants, as a slight aid to visualizing the groups. 
