1. Dichotomous Key
of
Chlorophyta
Prepared by:
NOE P. MENDEZ
CENTRAL MINDANAO UNIVERSITY (CMU)
npolomendez@gmail.com

2. If…
Thallus is hollow and tubular, one celled
thick.
Thallus is not hollow and tubular. Thallus
membranous, and is 2 celled thick.
Thallus sacate, monostromatic with frilled
margin
Thallus filamentous, thick cell wall, basal cell
long compared with the width.

3. Thallus filamentous branched,
lower branches dichotomous
Thallus feather like branched with
precurrent axis, pinnately or
radially branched, coenocytic
Thallus filamentous, without
forming blade, closely grouped,
forming compact spongy thallus

4. Thallus filamentous, closely fused to
form spongy thallus
Thallus coenocystious organized to form
stolon and erect branches
Thallus erect, segmented, calcified form
flabellated segments
Thallus erect, calcareous, dichotomously
branched fan or funnel shaped flabellum

5. Thallus multi-cellular, calcified, branching in 1-3
whorls at the top of axis
Thallus solitary pear shaped with fluid filled
vesicle
Thallus solitary bulb like, clavate vesicle, slightly
constricted at the base, vesicle filled with fluid
Thallus solitary forming small colony, whitish
green color with hairy tip

6. E. linza U. intestinalis U. lactuca U. rigida
Ulva (used to be Enteromorpha)

7. Monostroma
M. grevillei M. nitidum
M. angicava

8. Chaetomorpha
C. moniligera C. antennina C. aerea

9. Cladophora
C. albida C. aegagropila linnaei C. glomerata

10. Bryopsis
B. ramulosa B. plumosa B. pennata

11. Avrainvillea
A. erecta A. nigricans

12. Codium
C. tomentosum C. fragile

13. Caulerpa
C. taxifolia C. racemosa

14. Halimeda
H. copiosa H. kanaloana

15. Udotea
U. cyathiformis U. spinulosa

16. Acetabularia
A. ryukyuensis A. acetabulum

17. Boergesenia
B. forbesii

18. Valonia
V. fastigiata V. macrophysa

19. Neomeris
N. annulata

20. End of Report