248 "HE JOURNAL OF BOTANY 
and much shorter cells, the transverse walls of which are clearly 
visible. 
Many of the tufts of S. Yappii were of a red colour, especially 
towards their apices. This was due to the presence of a red Micro- 
coccus attached to the exterior of the filaments. 
9. Phormidium orientale, sp. n. (figs. 25-27). P. strato 
saistalnso, pallide serugineo ; filis subrectis i leviter flexuosis, 
angustissimis, a minusve ee vaginis hyalinis, wanes 
delicatissimis et non mucosis; trichoma atibus lete eruginei 
gustissimis, ad fiecpimanta non constrictis, apicibus rectis en 
a cellulis diametro pe, -plo longioribus, Brokiplneets 
hhomogeneo. Crass. trich. 1°6-1- 
This ‘eal species of Ea ate somewhat resembles P. an- 
gustissimum West & G. S. West, but is more than twice the thickness, 
and the cells are istively shorter. It roche a in quan forming 
an extremely thin, somewhat loose stratum he outside of the 
tuft-like masses of Symploca Yappii. The ais opiate between 
the cells are fairly distinct, and the cell-contents are quite homo- 
geneous. The sheaths are extremely thin and hyaline, but are 
easily seen at such places where the trichome has esca ed. The 
apical cells are spiinidris cal, with rounded ends. It is readily dis- 
lle from P. tenue (Menegh. ) Gomont and P. laminosum (Ag.) 
ms os toma elongatum Ag. var. Ehrenbergii (Kiitz.) Van Heurck. 
Rather scarce among the two preceding alge. 
Description oF PuatTE 439, 
Figs. 1-10. Aulosira thermalis, sp.n., X i 
» 11-16. Mastigocladus laminosus Cohn, x 520. 
» 17-20. Calothrix parietina Thur. var. amen var. n., X 520. 
» 21-24. Symploca Yappii, sp.n. 21, nat. size; 22-23, x 520; 24, x 830. 
»» 25-27. Phormidium orientale, sp.n. 95-26, x 520; 27, x 830. 
», 28-30. Oseillatoria proboscidea Gomont, var., x 520. 
GLAMORGANSHIRE PLANTS. 
By Rev. EB. S. Marsaatt, F.L.S., and W. A. SHooLBRED, F.L.S. 
Tur species mentioned below were observed mainly about 
Porthcawl, Pyle, and Port Talbot, on June 7th and 10th of last 
year. We believe that this interesting coast would repay further 
search. ‘* New county records ”’ for v.-c. 41 are starred 
Aconitum Napellus L, Abundant and certainly rape for 
phic miles in the valley of the Ely River, between Ely and 
* era Cheiranthus Vill. In considerable quantity, 4. little 
south of Port Talbot, sametited with B. Sinapioides Roth; looking 
like a native, but we know too little of the neighbourhood to form 
