444 Fr. J. Mathiesen. 



undulating lateral walls, those of the lower surface are still 

 more thinwalled, their lateral walls more highly undulating 

 and, as in the epidermis of the upper surface, furnished with 

 flange-like thickenings, which I found to be particularly well- 

 developed in the bracts of the flowers, and, on the whole, 

 in the upper leaves on the axis. Stomata occur only on the 

 lower surface; the guard-cells are on a level with the other 

 cells of the epidermis; they are surrounded by 3 — 6 cells. 

 Chlorophyll is abundantly present in the whole of the meso- 

 phyll and is also found in the epidermis of the lower surface. 

 On the lower surface there are glandular hairs of the usual 

 kind, and with the typical distribution; and besides there 

 are non-glandular hairs both on the upper and the lower 

 surface (Fig. 29, D and E)] they are multicellular and thick- 

 walled, often however with one or two cells unthickened and 

 therefore collapsed. 



Pedicularis Sceptrum carolinum L. 



Alcohol material from Aursundsoen, Norway (leg. Th. 

 Resvoll, 11. 8. 1918). — Herbarium material from the district 

 near the river Boganida, Alten, Mortensnæs in East Finmark, 

 and the Murman Coast. 



Lit.: Lange, 1871, pp. 254 et seq., 267, tab. III, fig. 25 (the 

 seed); Warming, 1890, p. 215; Norman, 1895, p. 456; Kerner, 1898, 

 Bd. II, p. 656; Knuth, 1899, p. 191; Silen, 1905, p. 92. 



A sympodial hemicryptophyt.e of rosette- or semi- 

 rosette type, with vertical or obliquely-ascending mesocorme, 

 which dies away behind, and from which adv^entitious roots, 

 1 — 2 mm tliick, are abundantly developed. 



2-year-old specimens, from Aursundsoen, showed that 

 the plant in its first year forms a few-leaved rosette; the 

 winter-bud is protected by scale-leaves, and the follo^^^ng 

 year the growth is continued by the formation of a more 



