usually it has a basal rosette of broad leaves with long petioles 
(petioles 10-20 mm long, by exception only 5 mm, or even 44 
mm). As a sharp contrast, the linear, cauline leaves are inconspic- 
uous, sessile, squamiform; their length vary between | and 3mm, 
although in some cases they may reach 12 mminlengthand 8 mm 
in breadth. 
ADDITIONAL MATERIAL. 
ARGENTINA. Prov. Mendoza: Dept. San Carlos: Puesto Rio Colorado. Herb. 
Kurtz (CORD).— Prov. San Juan: Dept. Calingasta: En las colinas entre Villa 
Nueva y El Leoncito, Castellanos, 28 Jan 1950 (LIL 15728).—Precordillera 
entre Barreales, Tontal y Retamito: Cuesta de La Cortadera, Kurtz 9772 (leg. 
Bodenbender), 22 Febr 1897. “In coll. glareos.” (CORD: S).—-Camino a Paso 
del Espinacito: Pampa Negra, Castellanos, 10 Jan 1953 (LIL 35324: US). 
Cordillera del Espinacito: inter Ciénega Redonda et Quebrada Colorada. Kurtz 
9564 (leg. Bodenbender), 5 Febr 1897 (CORD: S). Dept. Iglesia: Rio de la 
Tagua, below its confluence with Rio de la Sal (ca. lat. 29° 2’ 5” S, long. 69° 28’ 
42” W). ca. 2900 malt., Johnston 6146, 12/13 Jan 1926. “Erect plant growing in 
gravel; corolla yellow” (K; GH; S).— Vicinity of Bafios de San Crispin (ca. lat. 
29" II’ S, long. 69° 44’ W), ca. 3300 m alt., Johnston 6115, 10/12 Jan 1926. 
“Erect; corolla yellow” (GH; S; LIL).— Rio de la Sal, 3060 malt... /. H. Hunziker 
et al. 4874, 20 Mar 1951. “Corola amarilla. Ladera de grava” (CORD). 
CHILE. Guanaqueros, R. A. Philippi, Jan 1885 (GH).—Prov. Atacama: 
Geisse, 1889-1890 (GH). Dept. Vallenar, vicinity of Laguna Grande, ca. 3500 
malt., Johnston 5957, 5/6 Jan 1926. “Erect plant; corolla yellow” (GH). Dept. 
Chanaral, vic. of Potrerillos, ca. 2800 m alt., Johnston 4743, 26 Oct 1925. 
“Corolla yellow” (GH; K).— Quebrada de Dofia Inés Chica. Gigoux, Jan 1886 
(GH).—Des. Atacama, R. A. Philippi(BM; W).— Prov. Coquimbo: Coquimbo, 
R. A. Philippi (CORD; K; Fotogr. ex B, Field Mus. 3066: GH: CORD). Dept. 
Elqui: Banos del Toro, Reed (K).— Bafios del Toro, ca. 3500 m alt., Werder- 
mann 195, Dec 1923 (BM; GH; U: G).—Bafios del Toro, ca. 3300 m alt.. 
Morrison 17266, 5 Feb 1939. “Annual herb 0,4-0.5 m: fl. yellow” (G; GH: 
K).—Ca. 95 Km along the road from Rivadavia to La Laguna Dam, 2700) 3000 
m alt.. Morrison et al 17089, 6 Jan 1939. “Rocky slopes along the roadside; 
annual herb 0,35 m; fl. yellow; very rare” (GH).— Ca. 98 Km from Rivadavia. ca. 
2900 m alt.. Worth et al. 16399, 5 Nov 1938. “Annual herb 0,12 malt.: fls. lined 
with brown inside” (GH).—-Fundo Rio Seco, 14 Km east of Nueva Elqui, near 
the river, 3200 m alt., Wagenknecht 18119, 16 Dec 1940. (S). 
Distribution: Always at high elevations in the Andes (2900 to 
3500 m). This is the only species in the genus that occurs also in 
Argentinian territory (Prov. Mendoza and San Juan): in Chile it 
is confined to the northern provinces of Atacama and Coquimbo. 
Obs.— This species was wrongly referred by D’Arcy (1978: 713) 
to R. laxa, undoubtedly due to his lack of access to the holotype 
28 
