BOTANICAL GAZETTE. 27 



far as I recollect, however, no case of this sort is known in the or- 

 der; and the only instance I recall in which the dichogamy is in- 

 complete enough to allow self-fertilization is afforded by the genus 

 Hydrocotyle, described by Herman Muller (WeitereBeohachtungcn, 

 1879, 1. p. 32-33.). Even here there is very pronounced protandry, 

 for the stigmas do not become receptive until the last stamen has 

 matured; and the accelerated development of the pistil is doubtless 

 correlated with the reduced flowers and umbels of this aberrant 

 genus, and the attendant decrease in the number of its insect visit- 

 ors. The causes which led to this reduction in the attractiveness 

 of the flowers are probably of an entirely different nature, and 

 connected with the changed habit of the plants. In Germany the 

 flowers of the parsnip are said by Dr. Muller to be visited by Hy- 

 menoptera and Diptera, never by Coleoptera! — Wm. Trelease, 

 Cambridge, Mux*. 



Seeds of Orontium and Symploearpus — Has any Botanist 

 of U. S. got ripe seeds of Orontium and of Symploearpus, and will 

 they forward some by mail to Sir J. D. Hooker, Royal Gardens, 

 Kew, London? No matter how old; they are wanted for the 

 structure. — A. G. 



The Greenland Flora.— A year hence the classical Flora 

 Dcmica will be terminated by the completion of the seventeenth 

 volume. The work will contain figures of 4,000 species of plants, 

 of Scandinavia, including Greenland and Iceland. It has been 

 published whollv at the expense of the King of Denmark, and a 

 right royal work indeed. At its completion the plates (in folio) 

 which relate to Greenland plants, and which illustrate its whole 

 flora, are to be separately issued, with a brief letter press, under the 

 title of Icones Florce GroenJandicxe. As this flora is in one sense 

 American, and as the copies of the whole Flora Danica in the 

 United States are and must be very few, we take pleasure in an- 

 nouncing this illustrated Greenland Flora to American botanists. 

 Some of them w^ll wish to possess it. The price of uncolored 

 copies is fixed at 56 francs, of the colored at 236 francs. It should 

 be added that, as the impression is strictly limited, application 

 should be made very promptly. The editor, Professor Joh. Lange, 

 Copenhagen, informs us that he will himself receive subscriptions, 

 up to the first of May next. — A. G. 



A Note from Emesby.— Editor of the Botanical Gazette — 

 Let me thank Professor Rothrock most heartily for his courteous 

 statement— or rather re-statement— of the methods and "trend of 

 botany teaching in the University of Pennsylvania; after which 

 I ought not to have another word to say further than to disclaim 

 all thought or intention of "criticising" the articles which appear- 



