Dasylirion parryanum

Dasylirion parryanum
Dasylirion parryanum In Guanajuato Mexico
Systematics
Monocots Order : Asparagales (Asparagales) Family : Asparagaceae (Asparagaceae) Subfamily : Nolinoideae Genre : Dasylirion Type : Dasylirion parryanum
Scientific name
Dasylirion parryanum
Trel.

Dasylirion parryanum is a species of the genus Dasylirion in the asparagus family (Asparagaceae). An English common name is "Parry Sotol".

description

Dasylirion parryanum forms a trunk up to 100 cm high, which is sometimes branched. The stiff, twisted, variable, roughened, warty, bluish to green, dense leaves are 50 to 70 cm long and 8 to 13 mm wide. The irregularly arranged yellow radial spines are directed upwards. The bushy / fibrous white to gray tips are irregularly spread.

The panicley, woody, narrow inflorescence is 2.5 to 3.5 m high. The numerous flowers are yellow to cream in color. The flowering period extends from May to June.

The egg-shaped to round capsule fruits contain 1 seed and are 6 mm long and 5 to 6 mm wide. The triangular to elongated seeds are 3.5 mm long and 2 to 2.5 mm wide.

Distribution and systematics

Dasylirion parryanum is distributed in Mexico, in the states of San Luis Potosi, Aguascalientes and Guanajuato at altitudes of 2100 to 2300 m. It grows in desert areas on stony slopes together with Yucca decipiens , Nolina humilis , Agave stricta and various Opuntia species.

It was first described in 1911 by William Trelease .

Dasylirion acrotriche var. Parryanum (Trel.) Bogler is a synonym

The rare Dasylirion parryanum is a member of the Dasylirion section . It is limited in desert areas in east to central Mexico in San Luis Potosi, Aguascalientes and Guanajuato. The sturdy, short, strong trunk covered with old leaves is characteristic. The variable, stiff, roughened, warty, bluish to green, dense leaves with the strong fibrous / bushy end tips are typical. It is similar to Dasylirion leiophyllum but has these downward radial spines. In contrast Dasylirion occidentalis has smooth, longer leaves with fine bushy / fibrous end tips. In the overlapping areas, hybrids with z. B. different leaf structure.

Dasylirion parryanum is little known.

proof

literature

• Fritz Hochstätter : The Genus Dasylirion. (Nolinaceae) part 2 . In: Piante Grasse . Volume 31, number 3, 2011, pp. 116-117.

Individual evidence

1. ^ William Trelease : The desert group Nolineae. Dasylirion . In: Proceedings, American Philosophical Society . Volume 50, 1911, pp. 432-433 (online) .
2. ↑ David John Bogler: Ph. D. Dissertation: Taxonomy and Phylogeny of Dasylirion (Nolinaceae) . The University of Texas and Austin, 1994, p. 386.

Web links

Commons : Dasylirion parryanum  - collection of images, videos and audio files