114 MB. BENTHAM ON LOGANIACE^. 



which the seeds are imbedded. Most probably in a fresh state 

 they form a pulp filling the whole cavity of the fruit, assuming in 

 desiccation the regular atellately-lobed form, described and figured 

 by M. Bureau. 



Labobdea. 

 M. Bureau has been enabled to dissect three flowers of this 

 plant. He confirms the presumed valvular aestivation of the 

 corolla, but finds always two cells only to the ovary, as in the 

 majority of Loganiacece, and very plausibly suggests that the 

 three-celled one, examined by G-audichaud, was an accidentally 

 abnormal one. As the fruit is still unknown, there is nothing yet 

 to indicate more exactly its proper place in the order. 



Gabdnebia. 



M. Bureau has dissected a flower of G. ovata, with ovary-cells 

 and ovules very much larger in proportion to the ovary itself 

 than I had succeeded in finding ; possibly those I dissected may 

 have been imperfect by abortion, or M. Bureau's flower may have 

 belonged to the G. angustifolia, which is often much like G. ovata 

 in foliage. I found the ovary of G. angustifolia very much like 

 that figured p. 55 of M. Bureau's paper ; but what he designates as 

 a cupuliform arillus, was to my eyes a second ovule, collateral in 

 attachment, but superposed by pressure, and often ripening into 

 a second seed ; for the fruit of G. angustifolia is more frequently 

 tetraspermous than dispermous. 



M. Bureau's woodcuts, comprising dissections of all the genera 

 he has examined, are very accurate and well executed. 



I take this opportunity of requesting the correction of two 

 clerical or typographical errors in the first portion of this paper : — 



Page 57, line 2 from the bottom, for stipules read petioles. 



— 81, — 25, for exact read erect. 



On some Collections of Arctic Plants, chiefly made by Dr. Lyall, 

 Dr. Anderson, Herr Miertsching, and Mr. Bae, during the 

 Expeditions in search of Sir John Franklin, under Sir John 

 Eichardson, Sir Edward Belcher, and Sir Eobert M'Clure. 

 By J. D. Hookeb, Esq., M.D., F.E.S., E.L.S., &c. 



[Read April 1st, 1856.] 



Although the collections made during the later Arctic expedi- 

 tions contain no novelty, they are, I think, worthy of publication ; 



