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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 4 



I 



B. angustifoliuTn is closely related to B. rostratum but differs in the nearly 

 smooth trichomes, narrowly oblong leaves with length/width ratio greater than 3.5 

 (mostly greater than 4) and with constantly 6 rows of tubercles on the adaxial sur- 

 face, and the linear early caducous bracts; the length/width ratio is approximated 

 by the young leaves of part of B. rostratum (B. micropbyllum\ but the tubercles 

 in even these elements are rather irregularly arranged in 10 or more rows. B. 

 seorsum may be distinguished by the leaves of different shape with tubercles dis- 

 posed in 8 or more irregular rows, the glandular hypanthia, and the differently 

 shaped sepals. 



45. Brachyotum seorsum Wurdack, sp. nov. 



Trichomata minute sparseque aspera. Ramuli novelli obscure quadrangulati, 

 cum petioiis pedunculisque dense brevi-strigosi. Petiolus 2-4 mm. Lamina 12- 

 21 x 4-8 mm. elliptica apice hebeti-acuta basi acuta, nervis primariis 3 supra 

 impressis subtus expressis, secundariis utrinque 8-15 supra occultis subtus ex- 

 pressis reticulatisque; supra dense tuberculato-strigulosa, tuberculis 5-7/mm. 2 

 sed non regulariter in lineas dispositis basi 0.4-0.5 mm. diam. apice abrupte seti- 

 feris seto 0.3-0.5 mm. longo; subtus densissime striguiosa. Flores plerumque 5" 

 meri saepe terni, flore in medio dichasii interdum aborto; pedunculus gracilis 

 nutans 10-20 x 0.5 mm., bracteolis ad basim dichasii 2-4 x 0.3-0.4 mm. lineari- 

 bus valde caducis supra glabris subtus strigulosis. Pedicellus sub bracteolis 

 0.5-10 mm. longus dense strigulosus super bracteolis 3~6 mm. longus glanduloso- 

 hirsutus; pedicelli pedunculique bracteolae eaedem. Hypanthium 5-6 x 4.5*6 mm., 

 medio 0.3 mm. crassum, modice gtanduloso-hirsutum, pilis 8-10/mm. 2 plerumque 

 basibus expansibus apice abrupte setiferis seta 0.4-0.7 mm. longa glandulifera 

 cum pilis paucioribus (40%) appressis non-glandulosis intermixtis. Sepaia 5-6 x 

 3.5-4 mm. lanceolata apice anguste acuta basi 0.5-0.7 mm. cohaerentia, sinu lato 

 rotundato. Petala 10-11 x 7-9 mm. asymmetrice obovata apice oblique truncata, 

 ciliis glanduliferis 0.1-0.7 mm. Filamenta 5-5.5 mm.; antherae 5-5.5 mm.; con- 

 nectivum basi antherae ab anthera non liberum sed cum papilla juxtim basim 0.1- 

 0.15 mm. longa. Stylus 15-18 x 0.5-0.6 mm., per 5-7 mm. exsertus. Ovarium 4.5- 

 5 x 2.5-3 mm. apice per 1.5-2 mm. setulis conicis appressis glanduliferis modice 

 vestitum, lobis apicalibus super loculos 0.2-0.3 mm. 



Type Collection and Locality: Camp E-5161 (HOLOTYPE NY); Ecuador, Prov. 

 Azuay, paramo and subparamo area north and northwest of Paramo del Castillo, 

 about 6-8 km. north-northeast of Sevilla de Oro, 10000-11000 ft. elev., 31 Aug. 

 1945. "Straggling shrubs to 4 m. (lower on paramo but just coming into bud). Lvs 

 deep green above, pale-ochraceous below. Hypanthium dull crimson, pubescence 

 nigrescent. Corolla narrowly urceolate in outline at anthesis; body of petals suf- 

 fused with pink, veins deep red, margins greenish-yellow." Known only from the 

 type collection. 



An analysis of the floral patterns in this species is presented in the introduc- 

 tion to this revision and in Figure 23- seorsum is related to B. angustifolium 

 and to B. rostratum. From the latter species, it may be differentiated by the linear 

 early-caducous peduncular bracteoles, the somewhat different leaf-shape, and the 

 generally wider sepalar sinuses with the lobes tapering evenly to the apices 

 rather than tending to be oblong and less acute. While having other single char- 

 acters in common with various elements assigned to B. rostratum^ the combina- 

 tion in B. seorsum gives an appearance quite distinct from any of these elements. 

 For example, in none of the specimens of B. rostratum does there appear the com- 

 bination of strictly appressed non-glandular pubescence below the pedicellar 

 bracteoles and patent gland-tipped trichomes only above these bracteoles. The 



