Field notebooks : Switzerland, 1931-1938
Page 159
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Transcription
5-11-34 Quercus pubescens Willd Costatt 285, SvIT 199 Quercus sessiliflora Salisb Costatt 237 B&N II #394, SVI 25. A. Lvs first from branch on right side, just V-M towards Admiral Rides Bench. Young shoot conspicuously tomentose with fairly long hairs (hairs don't rub off easily) vs last years wood (20x) already remains of hairiness). Lvs (now) to 10 x 6.5 cm. Upper surface dark green vs to eye glabrous, but on midrib and occasionally elsewhere show short tufts of 2-seriate short hairs. Under surface shows def fine hairy to eye and (20x) is covered (on surface remarkably along veins with tufts of several hairs, the hairs certainly as long as the width of the side nerves). The lvs are ob-oval or oblong in outline. Often oblique at base, base squareish, or slightly cuncate or even slightly emarginate but never really eared. Often (not always) a nerve runs to one of the lower sinuses (or part way to the sinus). The nature of the pubescence points to Q. pubescens but most of the petioles are 15-20 cm. (See B v. B. Lvs first from tree left side, found shortly east of Admiral Ride's Bench. Young shoot glabrous to eye and (20x) has only few very short hairs. Last years wood not hairy. Lvs (now) 7.8 x 4 cm.