BOTAMCAL GAZETTE. 270 



ra, Miicor; (3) The Egg-spore Plants {Oosporere), (Edogoniiim, Vau- 

 cheria, Peronospora, Cystopiis, Fiicus ; (4) The Red Seaweeds and 

 their allies (Carposporesv), PodosphaTa, Eiirotium, Farmelia, Puccin- 

 ia, Agaricus ; (5) The Mosses and their allies (Rryophyta), Mar- 

 chantia, Mnium; (6) The Ferns and their allies (Pteridoph3ta), fern 

 ])rothallia and fruiting, Pleris, Polypodium, Selaginella. in. The 

 Structure aud Physiology of Phanerogams. — The structure of Gymno- 

 sperms ; the sexual reproduction of Monocotyledons ; the sexual re- 

 production of Dicotyledons. 



Notes- — Those who have had the pleasure of seeing that lovely 

 tree, the Magnolia grandiflora, in bloom in its native haunts, and who 

 live north of Maryland, must have ceaseless regret that it is not gen- 

 erally hardy in their district. A ifv^ trees live and bloom in sheltered 

 siiuations above the state mentioned. A single specimen in this city 

 (Wihnineton, Delaware) blooms freely nearly every year. Through 

 the kindness of the owner, J. H. Jackson, Esq., I am enabled to give 

 the following record of the period of its flowering for the years men- 

 tioned. The dates given are of the first and last flowers and show 

 the period o{ flowering to be much longer than might be supposed; of 

 course much the greater number of flowers appear during the first 

 four weeks. 



1873, from June 20 to 



1874, " June 22 to August 19. 

 ^875> " Jii'iG 21 to August 5. 

 1876, '• June II to August 10. 

 ^877, " June II to August i. 



1878, " May 30 to August 22. 



1879, " June 9 to August 17. 



1880, " May 28 to 



1 88 1, tree survived the excessive cold of last winter and bloomed, 

 but less freely than usual. No record has been kept since the last 

 date mentioned. 



The peninsula between Delaware and Chesapeake bays has gen- 

 erally a light, rather thin sandy soil, which does not differ materially 

 from that mostly prevalent in the Atlantic coast region from Long Is- 

 land southward. Yet it produces some noble forests of both ever- 

 green and deciduous trees. Some of your readers may remember the 

 splendid specimens of black walnut and tulip trees, shown at the 

 Centennial Exhibition by the Delaware State Commission. These 

 were respectively 7 and 9 feet through and were perfectly sound and 

 solid. While in Southern Delaware, some months since, I measured 

 a Cypress ( 7«-Wrt?/«w ) stump, 9 feet across. A Post Oak {Qucrcus stel- 

 Jata) measured 16 feet in circumference at 3 feet from the ground. 

 Pinus Tceda and Pinus mitis attain a height of 100 feet and a girth of 

 10 to 14 feet. Even Pinus inops which is usually considered a low 

 and straggling tree, was seen at least 60 feet in height. Some speci- 

 mens of Ahius maritima (a species i)erhai)s exclusively found in this 

 district) may well rank as trees. Here are measurements of three in- 

 dividuals. 



