KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55- N:0 5. 



Kil 



P. badioviridis n. sp. 



Caulis teres crassus simplex, internodiis 30 mm 

 longis vel ultra. Folia inferiora subcoriacea ovalia ± 

 longe petiolata multinervia caduca, snperiora coriacea 

 tenuia oblonga basi rotundata apice rotundata vel obtuse 

 subcuspidata ± 21-nervia, 80 — 85 X 35 — 40 mm, petiolata 

 petiolis longis (± 100 mm). Ligulce 80 mm longa? bicari- 

 nata? badiovirides. Spica? non evolutae. Anatomia caulis: 

 vide inf ra! 



Stem stout, 3 — 4 mm in diam., for the rest of about 

 the habit of P. rotundatus or stenostachys. From these, 

 however, it is well distinguished by the above given charac- 

 ters and the anatomic stem diagram. Especially significant 

 a,re the long ligules and the broad lower leaves of subco- 

 riaceous structure. Nor can it be intermingled with P. 

 linguatus, otherwise of the same distribution, which has 

 true membranous submersed leaves with shorter ligules 

 and richly developed subepidermal bast bundles. 



Stem-anatomy : Epidermis with a two-celled strength- 

 ening layer; few faint subepidermal strands of only 1 to 

 3 or 5 cells, and interlacunarly in the bark 1 — 2 circles of 

 bundles. The endodermis consists of usual O-cells and the 

 arrangement of the vascular bundles of the central stele is 

 prototypic with four median bundles, see the fig. 80, A. 



Distribution. 8. America. W. Patagonia, Rio Yelcha, 

 8. 1908. C. Skottsberg (hb. Uppsal.), n:r 386. 



P. ferraginens n. sp. 



Caulis ca. 0,5 m altus v. ultra, teres, crassus (3 mm 



OÖOOO 



QCDOQt 



str 



in diam.), nodis annulatus, internodiis mediocribus v. brevi- B i^' l\f'££™J^ a f; i] 

 bus, simplex usque ad spicam primariam. Folia ferruginea, Part of cross-section of stem, v. «'<■. 



snbepid. strands, sid, sclerenchyma- 



coriacea (om nia v. fere omnia), snperiora (omnia?) longe tons tissue, cc, central cylinder. 

 petiolata petiolis laminas a?quantibus v. superantibus, lance- 



olata, basi sensim attenuata, apice obtuse et conspicue cuspidata, laminis 70 — 90 X 

 20 — 30 mm, 19 — 21-nervia. Ligulce 35 — 45 mm 1., bicarinatse fuscse firmoe, in spatio 

 intercarinali 12 — 15-nervia. Pedunculus teres sequalis ca. 6 cm longus. Spica deflorata 

 ca. 30 mm. 1. Fruetus siccus 3,5 X 2,5—3 mm eo P. nodosi simillimus (sed major) 

 carinatus, rostro subapicali, operculo conspicue carinato, epicarpio loculoso. 



Anatomy of the stem: epidermis-cells somewhat stretched (3 to 6:1), pseudo- 



K. Sv. Vet. Akad. Handl. Band 55. N:o 5 



21 



