_ thriftily as either of these species. 
30 
§ 98. On the Calyptra in the Genus Archidium.—(In the year 
1868, after long and patient search, I succeeded in finding the Calyptra 
in the genus Archidium. Previous to this it appears never to have 
been noticed by any one. I immediately communicated the dis- 
covery to Mr. Sullivant, presuming that he would give us a correct 
figure of this organ, and of its position with regard to the mature 
capsule, in his promised “Supplement to Icones Muscorum.” But 
learning from Mr. Lesquereux that he left no notes or drawings on 
the subject, I have concluded to furnish for publication in the But- 
LETIN a synopsis of my own notes. 
In Archidium Ohioense, Schimp.,A. alternifolium,( Brid.) Sehimp., 
and A. tenerrimum, Mitt., the only species of the genus known to _ 
- me, almost immediately the capsule begins to form the calyptra 
ceases to develop, and, rupturing partly around the base, is quickly 
left at the base of the capsule, usually slightly adhering by a por- 
tion of its margin to the apex of the vaginula. It consists of @ 
long style, slightly expanded and lobed at the base. The style at 
length becomes curved, much flattened and oblique by being 
crowded between the perichextial leaves and the capsule; it 18 
many times longer thanin the genus Sympoma, Aust. (Micromitrium, 
Musc., Appalach.), while the expanded portion is equally as minute 
and as imperfectly developed. It occasionally ruptures, vertically, 
throughout nearly the whole length of the style; in this case’a 
portion of it is left on either side at the base of the saci a 
§ 99. Rumex Patientia, L.—This introduced species of Rumex 
appears to be litle known, though it has been in the country for 
two hundred years. Is it actually rare, or has it commonly, been 
overlooked ? Our Manuals of Botany do not furnish us with much 
light on the subject. This plant has been known for a number of 
years in Amherst, Mass., and during the past three seasons we have 
found it not rarely in the neighboring towns, growing with 
A. crispus and R. obtusifolius wonder the same conditions and as 
_ It is’still more common at Highgate Springs, Vt., where for miles | 
it may be seen on the roadside, and increasingly common as you 
cross the Canada line. Specimens from all these localities have” 
been submitted to competent authority and determined. Ra 
_ Will not some of the readers of the ButLerin interest themselves 
in the matter, and, by furnishing complete and mature specimens - 
of all the less known Rumices in their vicinity, assist in determin- 
ing more fully the range and character of the genus under con- 
sideration ? H. G. Jessup, Amherst, Mass. 
§ 100. Discharge of Pollen in the Paper Mulberry.—Some tw? 
years ago (vol. ii, No, 4), this subject was presented in the BULLE 
TIN, by my father, Dr. Martin, I had myself never seen the phe 
nomenon of the explosive discharge of pollen by this plant, @ 
have consequently watched for it with much interest. This : 
however, I have had the Opportunity not only of witnessing, bub 
of studying, the whole process, : ae 
It will be remembered that Broussonetia papyrifera is a diweio 
