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Hyalis D. Don ex Hook. & Arn., Companion Bot. Mag. 1(No. 4): 108 (1835).

Type: Hyalis argentea D. Don ex Hook. & Arn.

References

Cabrera, A. L. (1951). Notas sobre Compuestas de la Amrica Austral. I. Los g neros afines a Plazia. Darwiniana 9(34): 363373.

Cabrera, A. L. (1978). Hyalis. In: Cabrera, A. L. (ed.), Flora de la Provincia de Jujuy, Republica Argentina. Parte X Compositae. Coeccion Cientifica de INTA, Buenos Aires. pp. 582584.

Key to species

Leaves linear, surfaces silvery-tomentose; involucres 57 mm tall H. argentea

Leaves lanceolate, surfaces glabrous and green; involucres 610 mm tall H. lancifolia

*Hyalis argentea D. Don ex Hook. & Arn., Companion Bot. Mag. 1(No. 4): 108 (1835). Types: a. Mendoza, Dr. Gillies. b. Rio Quarto, Province of San Luois; and Villa del Rio Quarto, Pampas of Codova, Dr. Gillies. Salt Plains of Bahia Blanca, North Patagonia, growing in patches, to the extent of acres, to the exclusion of almost every thing else, Tweedie.

Vernonia argentea Gillies ex Hook. & Arn., Companion Bot. Mag. 1(No. 4): 108 (1835), nom. nud. pro syn.

Hyalis argentea D. Don ex Hook. & Arn. var. latisquama Cabrera, Darwiniana 9(34): 366 (1951). Type/s: not stated but referrable to b (Hooker & Arnott, 1835: 108) q.v. b. Rio Quarto, Province of San Luois; and Villa del Rio Quarto, Pampas of Codova, Dr. Gillies. Salt Plains of Bahia Blanca, North Patagonia ,growing in pathces, to the extent of acres, to the exclusion of almost every thing else, Tweedie. Syntypes: K.

Plazia argentea (D. Don) Kuntze, Revis. Gen. Pl. 3(3): 167 (1898).

Argentina, Bolivia (?)

Hyalis argentea D. Don ex Hook. & Arn. var. latisquama Cabrera, Darwiniana 9(34): 366 (1951) = Hyalis argentea D. Don ex Hook. & Arn.

*Hyalis lancifolia Baker in Mart., Fl. Bras. 6(3): 368 (1884). Type: Habitat in Argentinae prov. Salta in campis apertis: Pearce! Holotype: K.

Hyalis lorentzii Hieron., Icon. Descr. Pl.: 32, tab. 5 (1885) [ex Actas Acad. Nac. Ci. Crdoba 2: 41, tab. 5 (1886)]. Types: Habitat in campis gramineis, qui dicuntur pampasó'"", provinciarum septentrionalium Reipublicae Argentinae (coll. Hieronymus et Lorentz, n. 550: prope urbem Salta, d. III. 1873; et n. 596, prope vicum Dragones [Fuerte Sarmiento], territ. Oran, d. VIII. 1873). Syntypes: ?CORD.

Plazia acaciifolia J. Koster, Blumea 5(3): 665 (1945). Type: Hab.: auf dem aufgetrockneten Boden einer Sumpfagune bei Ipaguazu, 540 m alt., 6 Nov. 1910, [Herzog] n. 1608. Holotype: L; isotype: S, Z (000003800).

Argentina, Bolivia (?), Paraguay.

Note: Cabrera (1951: 366) placed Plazia acaciifolia here on the basis of Kosters description.

Hyalis lorentzii Hieron., Icon. Descr. Pl. : 32, tab. 5 (1885) = Hyalis lancifolia Baker

Hyalis spartioides [Benth. & Hook.f. ex] Hieron., Pl. Diaph. : 164/5 (18xx) = Aphylloclados spartioides Wedd.