. Critical researches on the potamogetons. KUNGL. SV. VET. AKADEMIENS HANDLINGAE. BAND 55. N:0 5. 29 Subsectio 2. Amblyophylli Hagste. Fructus rostro acuto subincurvato. P. amblyophyllus Meyek, Verzeichniss der von dem Herrn Dr. Kolenati in dem mittl. Theile des Cau- casus etc. ges. Pfl., — in Beitr. zu Pflanzenkunde des russ. Reiches. St. Petersb. 1849, 10. — Fig. Fig. 9. P. ambli/ophylliis Met. A, B, Tops of branch-leaves showing the diflferent form of the apex, the laeunie and the way in which the lateral nerves join the midnerve in the apex, '-j"; C, Peduncle and spilie (nat. size
. Critical researches on the potamogetons. KUNGL. SV. VET. AKADEMIENS HANDLINGAE. BAND 55. N:0 5. 29 Subsectio 2. Amblyophylli Hagste. Fructus rostro acuto subincurvato. P. amblyophyllus Meyek, Verzeichniss der von dem Herrn Dr. Kolenati in dem mittl. Theile des Cau- casus etc. ges. Pfl., — in Beitr. zu Pflanzenkunde des russ. Reiches. St. Petersb. 1849, 10. — Fig. Fig. 9. P. ambli/ophylliis Met. A, B, Tops of branch-leaves showing the diflferent form of the apex, the laeunie and the way in which the lateral nerves join the midnerve in the apex, '-j"; C, Peduncle and spilie (nat. size); D, Frnit from the side. a X i,3, 6 X 3,5. E, Fruit, cross-section, j, a, back, I ventral side, J. Certainly Meyer's latin description is very extensive yet not quite exhaustive, wherefore I think it proper to complete it, the more so as I have had occasion to examine the very original specimen collected by Dr. Kolenati at Kasbek, now preserved in the St. Petersburg museum. Stem 20—30 cm high with short internodes of equal length richly branched, in each leaf-axil only one branch with very short internodes, secondary branches wanting. Stem-/eaves linear, ± 1 mm broad, fragile, lacunous (no whole stem-leaves are preserved on the material and the basal leaves are quite wanting) with sheaths 15 mm in length or somewhat longer in the lower part. Branch-leaves linear, short, 50—60 mm, 3-nerved, the lateral nerves running in the very margin as in P. filifor- mis, apex roundly obtuse; sheaths of the branch-leaves brown, short. Young ligu- les 8 — 10 mm in length, subretuse, their frontfield faintly nerved. Peduncle filiform, 5—7 cm. Spike of 5—6 (or possibly more) whorls, the basal one a little retired, the others more approached to each other, the whole ca. 30 mm in length. Pollen and. 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 pe
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1916
