112 CARL SKOTTSBERG 



the island type to this, I have followed Buchenau, for it has 3 stamens and 

 a long perigone. I cannot undertake to revise the whole group, for which very 

 extensive material is necessary; I can only express the opinion that, when a 

 revision is made, L. racemosa in Buchenau's sense will not stand. 



Area of distribution: Typical form only in Mexico; other forms (or spe- 

 cies?) along the Andes to Fuegia; Masafuera. 



Juncus L. 



32. J. imbricatus Laharpe. — Syn. J. Chamissotiis, Johow, Estud. 151. 



Masatierra : V. Colonial (Johow), grassy slopes near the sea (fr. n /ia 16, 

 no. 108; 17 /i2 16, no. 108 b); B. Villagra; B. Chupones, stony ground (fr. 6 /i 17, 

 no. 245). 



The specimens correspond to var. Chamissonis (Kth) Buch., which is hardly 

 separable even as a variety, as ill-defined transitions occur. The flowers show 

 the size of the typical species, as described by Buchenau. The habit is 

 variable; no. 108 has culms 15 — 25 cm high and a dense inflorescence, no. 108 b 

 reaches a hight of 55 cm and has a rather lax inflorescence. 



Area of distribution: Ecuador to South Chile; Masatierra; Argentina; 

 Uruguay. 



*33- J* capillaceus Lam. 



Masatierra: East side of V. Colonial, swampy ground near the sea (fl.-fr. 

 29 /i2 16, no. 201). — Perhaps a recent introduction and not truly indigenous. 



Area of distribution: Ecuador; Central Chile; Masatierra; Argentina; 

 Uruguay. 



34. J. acutus L. — Johow, Estud. 150. 



Masatierra: Scouler! — Pto Ingles, central ridge (fl. 20 /i 17, no. 312; 

 f. laxior, no. 312 b); La Vaquen'a, open ground (fr. 9 /i 17, no. 598); stream west 

 of Co Yunque; B. Chupones, on a slope covered with Rumex acetosella. 



Johow believed that this species had been accidentally introduced and 

 that it disappeared from the island soon after, as nobody except SCOULER had 

 seen it. As we have seen, it is distributed over a large part of the island, and 

 nothing enforces us to suppose that it came there with the human traffic. 



Area of distribution: West and South Europe; Atlantic Islands; North 

 Africa; the Cape; California; Central Chile; Masatierra; South Brazil; Uruguay; 

 Argentina. 



35. J. Dombeyanus Gay. — Johow, Estud. 151. — Syn. J.fernandezi- 

 amis Steud. Syn. plant, glum. II. 302. 



Masatierra: Germain! Philippi! — B. Tierras Amarillas, rare (fl.-fr. 

 5 /i 17, no. 242). — Belongs to a. typicus Buch. 



According to Johow, J. microcephalus Kunth is also found, coll. by 

 Scouler, Douglas, Bertero, Reed and Moselev, but he had only seen 

 Reed's specimens, so that I suppose he followed Hemsley in bringing all to 



