. The American entomologist and botanist. of water, are the conditions suitable fortheir propagation. Probably there are some teiTestrial i)lants towhich salt is an essential element, and whichcannot be made to flourish except in the neigh-borhood of that element. Such plants as theSea Kale {Salsola kali), the Seaside Plantain{Plantar/0 maritima), ^Marsh Rosemary (SlatiecUmonium), the Sea-lungwort {Mertensia mari-tima), tlie Samphire {Salicornia), and othcra 344 THE AMEEICAN of similar habit, have not been found except inthe immediate vicinity of salt water. We are, liowever, fully disposed to
. The American entomologist and botanist. of water, are the conditions suitable fortheir propagation. Probably there are some teiTestrial i)lants towhich salt is an essential element, and whichcannot be made to flourish except in the neigh-borhood of that element. Such plants as theSea Kale {Salsola kali), the Seaside Plantain{Plantar/0 maritima), ^Marsh Rosemary (SlatiecUmonium), the Sea-lungwort {Mertensia mari-tima), tlie Samphire {Salicornia), and othcra 344 THE AMEEICAN of similar habit, have not been found except inthe immediate vicinity of salt water. We are, liowever, fully disposed to admit thatthere is much plausibility iQ the suppositionthat these peculiar lake shore plants are vestigesof the vegetation which once flourished uponthe borders of the great inland seas which at acomxsaratively recent time spread over the inte-terior of this continent. We do not consider the question settled, bu*present these researches as a contribution towarda more comprehensive view of the question. OUR NATIVE OAKS-No, 4 (Tig. 211.). able of our American oaks. The extreme formsof this oak have been classified by botanists astwo distinct species, viz: Quercus tinctoria,Bartram, and Quercus coccinea, Wang.; butthe best botanical authorities now unite theseas varieties of one species. Indeed, so numerousare the variations presented in this species, bothin leaf and fruit, that we might with as muchpropriety establish half a dozen species as a great number of specimens we haveselected a few of the more prominent to givetheir characters. [Fig. 212.] Black Oak (Quercus coccinea, variety tinctoria.) There is greater confusion as to the commonnames of diflferent species of Oaks than withrespect to any other trees. Thus some half-dozen trees are variously known as Black Oak,Ked Oak, Pin Oak, &c. This confusion arisesfrom the close resemblance of several species toeach other, the large variation as to form andsize of leaves and acorns in the same species, tothe tendency to hy
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