( TABLE E.—Vertical distri 
COMPOSITION OF 


Tide Levels. 
12 feet. 
Thallophytes. 

Vegetational Belts. Supra-Littoral Beach. Supra-Littoral Mar 

Species. Range.* Species. R 

11 feet. 
10 feet. 
9 feet. 
8 feet. 



Cladonia sp. | 9 to 12 s Lyngbya sp. 8 
s Nostoc sp. 8.£ 

| 
| Supra-Littoral Belt. 
| 8 to 12 feet. 
(Storm Beach and Supra- 
Littoral Marsh.) 



7 feet. 
6.5 feet. 

¢c Rhizoclonium tortuosum.........ee.ee0. ae coments 
S$. Calothrix,(4:sp3) <2\0cce sanescceure alviare lato cualeve ofalere ae 
8 Microcoleus cht onoplastes rain sere UiAaisis Se aera s . 
CO  ViAUCHETIR AED caictsls ow inw cc chats cy mee orelatereictarels ainiatetsiote 
e Enteromorpha intestinalis Esinieataperateratarciaioiate aeveictiers 
8 Lyngbya (8 sp.)..... aisiaice shefaisie eteuatae einai 
@ Flea. fulveseens..... 0.56 2ss0008 Sipiasite mesiterers tee 
c Monostroma latissimum.........0...-2000. Rh we'eee 
$ Spirulina tenuissima sac css. sceeen eee ee 
Upper Littoral Belt. 
6.5 to 8 feet. 
(On all shores.) 
CONrNOCUr SY 
Sion 

6 feet. 
5 feet. 
4 feet. 

3 feet. 
2 feet. 
1.5 feet. 
1 foot. 
0 foot=M. L.W. 
2 foot. 
—2 feet. 

—83 feet. 

* The two numbers given under ‘‘range’’ indicate the levels (above mean low water) between which the 






on 
e Rhizoclonium tortuosum..............cceseeeeees 
¢ Rhizoclonium riparium...........ccecsseessseses 
f Bostrychia rivularigs....ctecces cee eee None 
cM lothrix aeca., Acdses se os bis Saeiste se sipnte comnts 
S$ Anahena tortiloge 1.4.54. 0s assur easeneckas tore 
$s Lyngbya MOSUUALUL cies 'cc cease Set eeaicke oe eee eee 
s Microcoleus chthonoplastes.... gia tetas Slgisvelecebornn ents 
p Ralfsia clavata........... ee Sialetess niciatetckensratatataierors arcs 
r Hildenbrandia prototypus..............s00. Abt 
ce Enteromorpha intestinalis..............- a aelcicisinte 
euMonostroma. latissimum......,.200-cene ves eee 
e Ilea fulvescens.......... oa ciate crefavele eis sterss civ ate. ere esis 
O Vauch6ria :p; «shechande cco sansorreeacee ani n ees ‘ 
ce Cladophora expansa...... m siviole ais Sieve rersielsreiclelayenyeters = 
p Pylaiella littoralis robustus....... b sgieiddeseitaies ¢ ‘ 
¢ Delesseria leprivril.? coco eee use lee tee eee 
SSRIVAIATIA BELA cicewes vets acces aoe eee ee 
© Porphyra laciniata... cece ter ee eee eee Abe 

DUH RAED OM ORR RWWA Om 
Mid-littoral Belt. 
1.5 to 6.5 feet. 
Mid-littoral Marsh and 
Mid-littoral Rockweed 
Association. 
Gin 
I 
wr 





cr Ulva lactucaslatissining «sts... ess vs. occe cesses —5 
¢ Knteromorpha clathratac.......0.esoeeroueeerrente —1 
ce, Hnteromorpha intestinalis..2. .\.;.o.scesseuen aie ee 2 0 
p Ascophyllum nodosum,..sc.c...cet cheese ses de nel ~*T 
pi Fucts vesiculosus.) 2c cad. ecto oe ee arrays Se 0 
r Porphyra paeeance siesa'e¢ oxb.0l'e shoves > leaner eet meee etetata oo : 
: rf Oeramium rubrum. adse- sear alee eee es = _ 
iti Hag os r Ceramium strictum.......ceccasccscserracessencs —2 
(Lower Littoral and Sub- p Pylaiella littoralis robustus .............s0e20e0: —1.5 
littoral Belts.) r Ohondrus Crispus... oc oc save dacs ccetentn e's eet ooae 
; | p Ectocarpus confervoides. .....6c.sncecccccccccvecs 0 Fl 
r Hildeabrandia prototypus...........s+06 Misteisie leis —1 | 
y Agardhiella tenera erates. ste retids. ccc sc cces —1 
S$ Spirulina: tentisslmaaioec-remoc eins skis are ea os ¢ 0 
rf Delesseria leprieuriist...-..csecccss ccc ces cee cess =1 
Melosira nummiloides.\ iesimisinweciss ras sawiciemacres : —1 
Navicula grevill@iti... cose fecesenecers tect teats —1I 
p Ascophyllum nodosum, ss sess sccccdessadisscssvece 
p Fueus vesiculosus: cect ccke toceep es eee tear ais oe | 
p Fucus vesiculosus spiralis................ Beara eis 


| 
1 


The small letter before the name of each species shows to the eye, in glancing down the column, the phy 
8 = Schizophycex, d = Dicotyledonez, and m = Monocotyledonex. 
