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Published In: Systematic Botany 32(1): 147. 2007. (28 Feb 2007) (Syst. Bot.) Name publication detail
 

Project Name Data (Last Modified On 7/20/2009)
 

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5. Exhalimolobos palmeri (Hemsley) Al-Shehbaz & C. D. Bailey, Syst. Bot. 32: 147. 2007; Sisymbrium palmeri Hemsley, Dign. Pl. Nov. Mexic. 2: 19. 1879; Hesperis palmeri (Hemsley) Kuntze, Revis. Gen. Pl. 2: 935. 1891; Halimolobos palmeri (Hemsley) O. E. Schulz, Pflanzenreich IV. 105(Heft 86): 290. 1924. TYPE: Mexico, San Luis Potosí, 22°N, 6,000-8,000 ft., 1878, C. C. Parry & E. Palmer 13 (holotype, K!; isotypes, F!, GH!).

Halimolobos palmeri var. acutilobus Rollins, Contr. Dudley Herb. 3: 249. 1943. TYPE: Mexico, Hidalgo, Sierra de Pachua, 17 Aug 1898, C. G. Pringle 7651 (holotype, GH!).

Herbs biennial or perennial, canescent or silvery so. Stems 2-5 dm tall, erect, simple or branched above, densely pubescent with a mixture of long, simple, setose trichomes mixed with smaller branched ones. Basal leaves petiolate, oblanceolate, repand or deeply divided, densely pubescent to canescent, 3-6 cm; middle cauline leaves sessile, auriculate to amplexicaul, 2-8 ´ 0.5-2 cm, pubescent at least on midvein, dentate to subpinnatifid. Racemes elongated considerably in fruit; fruiting pedicels divaricate, pubescent,4-10 mm. Sepals oblong, pubescent, ca. 2 mm; petals white, narrowly spatulate to linear-oblanceolate, 3-4 ´ to 1.3 mm; 90-1i0 per ovary. Fruits oblong-linear, 1-2 cm ´ 2.5-3 mm, divaricate-ascending, terete; valves glabrous inside and outside; style obsolete or to 0.2 mm. Seeds oblong, biseriate, 0.5-0.6 mm.

Flowering: Jun-Oct.

Habitat: steep slopes, hillsides, shade of shrubs.

Distribution. Mexico (Hidalgo, Querétaro, San Luis Potosí, Zacatecas).

 

 


 

 
 
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