70 BOTANICAL GAZETTE. 



objects for examination under tlie microscojie ; or are there damp, or drii)ping rocks, 

 gatlier some of tlie crusts, or gelatinous coatings, yon will find in them Sirosiphon, 

 Scytonema, perhaps Glococapsa, Palmclla, or Nostocs and the like. We rarely find 

 one plant alone, generally two or tlux'e forms intermingled. The field is so large, the 

 variety so great, the forms so diversified, yet all so perfect in symmetry, the study can- 

 not fixil to impress the mintl and often excite the utmost enthusiasm. The study has 

 been much neglected, there is much to be worked up. Europe boast of upward of two 

 thousand species. We should find no less; but hitherto we have only seven hundred 

 species recorded. Much remains undone. — Fkakcis Wolle, BdMehem, 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 them : 



Delpluiiiam occidentcde. This is D. aziireain, Mx., a very cauescent variety. 



Lepidium integrifoUum, should be read L. intermedium. Gray. The leaves are en- 

 tire. 



As^tracjnlus recticarpus. This plant is a form of Tndir/ofera leptosepahi, Nutt. with 

 very narrow leaflets. 



Elymus CttiiadeiiHin, var. minim ii.i^ is Ilordevm, pn sill urn, Nutt. 



Sj)imnthes Romanzovinna. This plant is now thought to be an undescribed species. 

 More time and material are wanted for its recognition. — A. Wot)D. 



PoLYTRiCHUM TENUE Menzies, Lindb.=P. PennsyUduicum, IIkdw.= Pof/o?iatti7n 

 hrevicaule Brid. ; Suli.iv. Icoues. 



PoLYTRiciiUM I3UACHYPHYLLUM, lSlicnx.=Pflgoni(tum hrachi/phi/llum, Beauv ; 

 SuLLiv. Icones. 



Probably the male plants of both these species always occur, in their season, in 

 the same localities where the female plants abound. In P. tenne the male plants are 

 often mixed, yet they evidently are not developed in the same nidits. The male plants 

 are very numerous and conspicuous, apparently acaulescent, but projecting a kind of 

 stem, which is clothed with the confervoid fllamcuts, into the earth, simple or branched. 

 Leaves dark brown or brownish red, numerous and crowded into globular or rosulate 

 heads, spatulate or Habelliform, mucronately acuminate, stronglj" eostate, subdentateor 

 crenate, often subunduiate. Antheridia very numerous, paraphysate. (Vide Muse. 

 Appalach, No. 2o3.) The male plants mature in July and August; the female in Sep- 

 tember and October. In P. Irachypliyllnm. the male and female plants grow together 

 (always?) and apparently are developed in the same nidvs. The male plants are ex- 

 tremely minute, bemg invisible to the naked eye, and only visil)le by the aid of a good 

 lens as mere i-eddish specks on the surface of the more highly developed protliallus. 

 They are ovate, acaules(;ent, eradiculose (not being immediatelj' attached to the ground). 

 Leaves few (about 5), red or reddish brown, lax, ecostate, entire obtuse or obtusish, the 

 outer ones roundish, the inner ones (often narrowly) spatulate. Antheridia few (about 

 4), short antl thick (oblong-cylindrical), ei)araphysate. The male plants mature in 

 early spring (in the Southern Stales) (he female in late autumn (in New Jersey). — C. F. 

 Austin. 



DAUiaNGTONiA C'ai,tkohnica, Toini. — In Sei)tember, 1874, while ol)serving the hab- 

 its of Darlingtonia, 1 found a great many small white larva^ in the iii[ui(l and insect 

 mass at the bottom of the tubes. They were found in all the tubes, even those of the 

 seedling leaves conlained from one to three, while in the larger leaves they numbered 

 hundreds. I tried, in vain, to find out what insect produced the larvte and to note any 

 change in them. They are always i)resenl winter and summer, and even active even 

 when the thermomelcr marks zero. They make tlieir appeariince in tlie young leaves 



