Erratum [stub]

1878 Botanical Gazette  
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more » ... out Early Journal Content at http://about.jstor.org/participate--jstor/individuals/early-journal--content. JSTOR is a digital library of academic journals, books, and primary source objects. JSTOR helps people discover, use, and build upon a wide range of content through a powerful research and teaching platform, and preserves this content for future generations. JSTOR is part of ITHAKA, a not--for--profit organization that also includes Ithaka S+R and Portico. For more information about JSTOR, please contact support@jstor.org. BOTANICAL GAZETTE. objects for examination under the microscope; or are tlhere damp, or dripping rocks, gather some of the crusts, or gelatinous coatings, you will find in them Sirosiphoni, Scytonema, perhaps Glococapsa, Palmella, or Nostocs and the like. We rarely find one plant alone, generally two or tlhree forms intermingled. The field is so large, the variety so great, the forms so diversified, yet all so perfect in symmetry, the study cannot fail to impress the mind and often excite the utmost enthusiasm. The study lhas been much neglected, there is much to be worked up. Europe boast of upward of two thousand species. We shou-lld find no less; but hiithierto we have only seven hundred species recorded. Much remains undone.-FitANscrs WOLLE, Bethlee7wm, Pa. ERRATuM.-In my list of plants from the Indian Territory contained in the GA-ZETTE for June, pp. 49, 50, the following errors have been detected. The reader will please correct tlhem: Delph1niurn occddentale. This is D. azureurn, MI2x., a very canescent variety. Lepidium integrifoliun, should be read L. inte-rrnediu?n, Gray. The leaves are entire. A*tragalus recticarpus. This plant is a form of Indigofera leptosepaUe, Nutt. with very narrow leaflets. Eymus Canadensis, var. minimus is Hordeum pusillum, Nutt. Spiranthe Romanzoanana. This plant is now thouglht to be an undescribed species. More time and material are wanted for its recognition.-A. WOOD. POLYTRICEUM TENUIE MENZIES, LINDB.-P. Pennsylvaniecm, HEDW.-POgOnatUm brevicauae BRID.; SULLMI. Icones. POLYTRICHUM BRAOIYIHIYLLUM, MicH.=Pogonaturn brachyphyllum, BEJAUV; SuLLIV. Icones. Probably the male plants of both these species always occur, in their season, in the same localities where the female plant.s abound. In P. tensue the miiale plants are ofteni mixed, yet they evidently arc not developed in the same nidus. The male plants are very numerous and conspicuous, apparently acaulescent, but projecting a kind of stem, which is clothed with the confervoid filaments, into the eartlh, simple or branched. Leaves dark brown or brownishl red, numerous and crowded into globular or rosulate heads, spatulate or flabelliform, mucronately acuminate, strongly costate, subdentate or crenate, often subundulate. Antlheridia very numerous, paraphysate. (Vide Musc. Appalach, No. 233.) The male plants mature in July and August; the female in September and October. In P. 62rachyphylwltn the male and female plants grow together (always?) and apparently are developed in the same nidus. The male plants are ex-
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