Holodiscus argenteus (L. fil.) Maxim.

Páramos, áreas de transición a páramo.

Distribucion en Costa Rica: Cordilleras Volcánica Central y de Talamanca, en elevaciones de 3.100 a 3.800 m.
Distribucion General: Sur de México a Colombia.

Arbusto.

Arbustos de 1,5 a 2,0 m de altura, profusamente ramificados y tallos subteretes sin espinas. Hojas simples alternas, cortamente pecioladas, de elípticas a obovadas u oblanceoladas, de 1,5 a 3,0 cm de largo, crenado-serradas, de glabras a glabradas en el haz, densamente glauco-tomentosas en el envés, cuneadas o atenuadas basalmente. Inflorescencias paniculadas, pero con pocas flores; hipantio pubescente; flores 5-meras, con pétalos blancos y pequeños. Frutos aquenios incluidos en el cáliz, menores a 4 mm de largo.Este género pudiera ser confundido con Amelanchier otra Rosaceae, pero se reconoce por sus aquenios secos al frutificar y rango distribucional distinto.

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Depositario del tipo:
Recolector del tipo:

Sericotheca argentea (ly. f.) Rydberg
spiraea argentea L. f. Suppl. 261. 1781.
Holodiscus argenteus Maxim. Acta Hort. Petrop. 6 : 254. 1879. Schizonotus argenteus Kuntze, Rev. Gen. 225. 1891. Schizonotus argenteus Mutisianus Kuntze, Rev. Gen. 226. 1891.
A tall shrub ; bark of the young twigs gray and densely tomentose, strongly angled ; that of the old stems dark-gray ; leaf-blades oblanceolate, 1-3 cm. long, thick, white-silky on both sides, acute at the apex, cuneate at the base and decurrent on the short petioles ; inflorescence compound, ovoid, 4-8 cm. long, with ascending tomentose branches ; sepals triangular-ovate, acute, about 1.5 mm. long; petals obovate, about 2 mm, long; stamens 20, shorter than the sepals ; carpels obliquely obovate, curved on the upper edge but less so than on the lower, their bodies about 2 mm. long, their beaks 1 mm.
J
Type locality : New Grenada.
Distribution : Mountains of Colombia ; also reported from Costa Rica, perhaps doubtful.

Sericotheca schaffneri Rydberg, sp. nov
spiraea discolor dumosa S. Wats. Proc. Am. Acad. 17: 353. 1882. } Schizonotus argenteus griseus Kuntze, Rev. Gen. 226. 1891.
A low shrub ; bark of young twigs dark-brown, finely villous, that of the older branches almost black, exfoliating ; petioles 3-5 mm. long ; leaf-blades 1-3 cm. long, ovate or roundedoval, obtuse at the apex, usually somewhat cuneate at the base and slightly decurrent on the petioles, more or less doubly serrate with ovate, mucronate teeth, sparingly pubescent on both sides, only slightly paler (not at all tomentose) and conspicuously glandular-atomiferous beneath; inflorescence ovate, 5-7 cm. long, about 5 cm. wide, branched but branches usually simple, ascending-spreading; sepals ovate, acute, 1.5-1.75 mm. long; petals elliptic or oval, about 2 mm. long; stamens 15-20, about 2 mm. long;pistils 5; carpels semi-obovate, nearly 2 mm. long, with beaks scarcely 1 mm. long.
Type collected at San I.uis Potosi, Mexico, in 1879, W. S chaff ner 451 (herb. N. Y. Bot. Card.). Distribution : Northern Mexico and Arizona.

Holodiscus argenteus es una especie de arbusto de la familia de las rosáceas, que se encuentra desde México hasta Colombia, entre los 2100 y 3500 m de altitud, en los estratos bajos de los bosques o en los bordes de bosques alterados.​

Holodiscus argenteus là loài thực vật có hoa trong họ Hoa hồng. Loài này được (L. f.) Maxim. mô tả khoa học đầu tiên năm 1879.