Two Undescribed Species of Hypericum from 



South America 



H. A. Gleason 



Hypericum andinum n. sp. Section Brathys, subsection 

 Euhrathys: stems sexeral from a woody perennial root, woody, 

 erect, strict or virgately branched above, 1-3 dm. high, ir- 

 regularly ribbed; internodes mostly 3-4 mm. long; leaves 

 stiff, more or less involute, nearly erect, ascending, or out- 

 wardly curved, linear, 5-7 mm. long, acerose, 1-nerved, deeply 

 and conspicuously pitted on the lower side, deciduous from the 

 older stems, where the bases persist as minute projections; 

 flowers numerous, solitary at the ends of the branches or 

 more commonly in clusters of 2-4 terminating short branches; 

 sepals oblong-lanceolate, conspicuously punctate, 4-5 mm. 

 long, 1.3-1.7 mm. wide; petals narrowly obovate, 7-9 mm. 

 long by half as wide; stamens 20-25, 3-4.5 mm. long, all sepa- 

 rate; ovary ovoid, 2.8 mm. long, 1-celled with 3 parietal 

 placentae; styles 3, separate, half as long as the ovary. 



Type, Bang 1026, collected near snow-line, Mt. Tunare, 

 Bolivia, 1891, and deposited in the herbarium of the New York 

 Botanical Garden; other specimens are Biichtien 57, Williams 

 851 and 1526, Rusby 1350, and Mandon 790 from Bolivia, and 

 Machride 4884 from Peru. The species is related to //. struthiolae- 

 folium Juss., from which it differs in its smaller flowers with 

 much few^er stamens and shorter leaves. Its slender stems, 

 abruptly branched at the top into a few-flowered inflorescence, 

 give it a very characteristic habit. 



Hypericum pimense n. sp. Section Brathys, subsection 

 Spachium: perennial from a woody root; stems densely tufted 

 and spreading, 3-8 cm. long, the internodes 2-5 mm. long, 

 prominently flattened and bicarinate, punctate; leaves crow'ded, 

 usually imbricate, spreading, firm, narrowly oblong, 4-6 

 mm. long, 1-2 mm. wide, obtuse, narrowed toward the base, 

 1-nerved, heavily and irregularly black-punctate; flowers 

 mostly in terminal cymes of three, occasionally also in the upper 

 axils; pedicels of the terminal flowers 3-5 mm. long, of the 

 lateral flowers shorter; sepals dimorphic, the outer three oblong, 

 about 1 by 3.5 mm., the inner two obovate, about 2 by 4 mm.; 

 petals narrowly obovate, about 5 mm. long; stamens 10, 

 separate, about 3 mm. long; ovary ovoid, 1.5 mm. long; styles 

 3, separate, 1.5 mm. long. 



Type, Pennell 13,446, collected on rocky siliceous slopes, 

 Arauco, Dept. Puno, Peru, alt. 4100-4300m., 21 Apr. 1925, 



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