260 SEAWEEDS. [^September, 



which grew on some fields by the wayside. In a bog at Murthly 

 station we collected Menyanthes trifoliata, Carex curta, and a 

 few other Carices more common; and near its margin Pingui- 

 cula vulgaris and Genista anglica. I may also state that by the 

 margin of a stream* at the foot of Birnam Hill, I saw plenty of 

 Polypodium vulgare, P. Oreopteris, P. Dryopteris, and P. Pheg- 

 opteris. I also collected a few specimens of Carex pallescens, and 

 Saxifraga aizoides, Bartramia fontana, and Mnium pundatum, 

 but neither in fruit. 



Bridge End, Perth, July, 1860. 



SEAWEEDS. 



Sir, — May I take the liberty of inquiring through the medium 

 of your pages, whether any of your correspondents have dupli- 

 cates which they could spare me of Desmarestia Dresnaii, Nac- 

 caria hypnoides, Zonaria coUaris, Z. parvula, Punctaria latifolia, 

 Delesseria angustissima, and Rhodymenia cristata? 



While on the subject of Algse", I may observe that the harvest 

 of seaweeds on this coast is not only very late this year, but 

 likely to be very deficient. Many of the more delicate Algse, 

 which are usually found here between the end of May and the 

 beginning of July, have not yet made their appearance. Of those 

 that have appeared, some are stunted in growth ; others are very 

 scarce. Referring to my notes, I find that last year, on June 

 5th, I gathered Ectocarpus Mertensii, Cladophora uncialis, and 

 Taonia atomaria ; and that on the 15th I found on the beach 

 Griffithsia barbata, G. corallina, and Naccaria Wiggii. With the 

 exception of Taonia, now (July, 1860) about three inches high 

 and without fruit, and one tuft of C. uncialis, too small to gather, 

 I have not yet met with these plants. If, however, plants which 

 come under the common term seaweeds have been unusually 

 scarce. Diatoms and also Zoophytes have been particularly abun- 

 dant on this shore. 



It would be interesting to ascertain whether these peculiarities 

 have been observed on other parts of the coast. 



In conclusion, I beg to add that I have still a few specimens 

 of Griffithsia barbata, and some other plants collected in 1858 



