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MISSOURI BOTANIC GARDEN REPORT, 



East Gloucester Plants. — Last month I was glad to gather 

 Corex tomentosa still nearer to the Berkshire boundary than its 

 former known habitat, but I am not so sanguine of its reaching that 

 county now as I was at first. The character of the meadows 

 changes considerably, and the rich, lush grass of the Thames 

 meadows in Berkshire is not so favourable a habitat for sedges as 

 the more barren meadows of the Coin Valley with their profuse 

 sedge growth. For instance, in them yesterday I gathered Scirpus 



Caricis, Carex pulicaris, C. disticha, C. ovalis, C. tomentosa, C. 

 Goodenoivii, C.flava, C. flacca (C. glauca), C. ampullacea, C. paludosa, 

 G. acuta, C.fulva, C. birtei'vis, C. hirta, C. riparia, and Eriophorum 

 angustifolium in beautiful condition. Other plants noticed in one 

 vicinity were Ceterach, Thymus, Sieglingia, Bromus racemosus, 

 Poa compressa, Festuca rigida, Cardials pratensis, Valeriana dioica, 

 Brachypodium pinnatum, Thalictrum flavum, Ranunculus Drouetii, 

 JR. trichophyllus, Lithosperma officinale, Ophioglossum vulgare, Erysimum 

 orientale, Potamogeton Jlabellatus, P. pectinatus, P. Ftiesii, Scirpus 

 acicularis, S. midticaulis, S. pauciflorus. The canal gave a curious 

 instance of restricted habitats ; in this still water grew a great 

 quantity of Alisma ranunculoides , but with the lock which marks the 

 entrance of the Cole and Coin to the Thames the plant ceases ; not 

 a scrap could I see in the River Thames, into which the canal runs 

 at this point, nor does Chara hispida show itself in the river. Both 

 these plants might be well assumed to grow in the river into which 

 the canal passes, but this is not the case ; the former of the two 

 I have not yet found in Berks. — G. Claridge Druce. 



NOTICES OF BOOKS. 



Missouri Botanic Garden. Third Annual Beport. St. Louis, Mo. : 

 published by the Board of Trustees. 1892. 8vo, pp. 170, tt. 57. 



This volume is as beautifully printed and as admirably got-up as 

 its predecessor, which we noticed on p. 32. Like the former Eeport, 

 it contains several important botanical papers. Prof. Trelease, the 

 Director of the Garden, contributes a revision of the North American 

 species of Rumex, illustrated by thirty-three excellent plates ; some 

 notes on Yucca ; and the description of a new Agave (A. Engel- 

 manni), with thirteen plates mostly after drawings by Engelmann. 

 Nineteen species of Rumex are catalogued as occurring north of 

 Mexico ; Prof. Trelease gives full descriptions, and a copious list of 

 localities, in which we are glad to see the collectors' numbers cited. 

 Among his authorities he cites Dr. Trimen's various papers pub- 

 lished in this Journal about twenty years since, when Docks were 

 in fashion ; does anyone study them now in England ? Prof. C. V. 

 Eiley gives a careful and comprehensive summary of the facts 

 connected with pollination of Yucca by Pronuba yuccasella, accom- 

 panied by eight plates ; and there is a note and plate of Pannelia 

 molliuscula by Mr. T. A. Williams. 



