Identifier: transactionsproc4445phil (
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Transactions and proceedings and report of the Philosophical Society of Adelaide, South AustraliaYear:
1878 (
1870s)Authors:
Philosophical Society of Adelaide, South AustraliaSubjects:
Philosophical Society of Adelaide, South Australia SciencePublisher:
Adelaide : The SocietyContributing Library:
University of Illinois Urbana-ChampaignDigitizing Sponsor:
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view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:r.The chief difference, however, is to be found in the attach-ment of the pollinia, which are approximately of the samesize in both series so long as they are uninfluenced by thestigmatic fluid. A careful examination of the material avail-able failed to disclose any evidence of attachment bydichotomous caudicle, even at an early stage of bud develop-ment. It was noted that at the apices of the masses, thegranular material occasionally assumed a loose linear form-ation remotely resembling a caudicle, but in no instance didthere appear to be a dichotomous connection between theindividuals of a pair and between the corresponding pairs oftwo series, such as was found to exist in P. grandifolius.Dehiscence takes place very early in the bud, but pollinia areoften retained, longer than would be expected from the frailnature of their attachment, some generally being found insitu after expansion of the flower. They also retain their Trans, and Proc. Roy. Soc. S. Anstr. ol. \A .. Ilate A1J.Text Appearing After Image:269 consistency and do not become agglutinated so rapidly as inthe other species. As in the latter, the external membersof the lower series are the first to become softened by absorp-tion of stigmatic fluid, the others usually remaining un-influenced and retaining their form until they are releasedfrom the matrix and fall into the stigmatic-cavity. The tendency in the genus Phajus to produce supple-mentary anthers or staminodia is well known. Three suchcases were observed in the material under examination. Thestaminodes took their origin from the upper shoulder of thewing and represent the suppressed lateral anthers of theinner whorl. EXPLANATION OF PLATE XXII. Fig. 1. Column of P. Bernaysii from the front, the antheris in the horizontal position; dehiscence has taken place.a, anther; st, stigma, ap, stigmatic appendage; w, wing of column;a, origin of staminode : p, pollen-mass of 2nd series showingbelow rim of anther. Fig. 2. The anther has been removed together with theupper seriesNote About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.