Brachymenium speciosum (Hook. & Wils.) Steere.

Robinson, Harold & Golinski, G. Karen, 2020, Notes on Brachymenium in Guyana with a new species from Mt. Ayanganna, PhytoKeys 154, pp. 11-17 : 11

Brachymenium speciosum (Hook. & Wils.) Steere. Figure 2

Notes.

The latter species has been collected on a mountain near Ayanganna as indicated below.

Mt. Wokomung, Little Ayanganna, upper slopes of highest point of Mount Wokomunga massif. 5°5'8"N, 59°50'32"W. elev. 1525 m. Tepui scrub forest on sandstone and peat, with Schefflera , Clusia and Guadua . 5 July 2003, H.D. Clarke 10550, with R. Williams, C. Perry, J. Kelly, D. Gittens, S. Stern; Guiana. Mt. Wokomung, Little Ayanganna, upper slopes of highest point of Mount Wokomung massif. 5°5'8"N, 59°50'32"W. elev. 1525 m. Tepui scrub forest on sandstone and peat, with Schefflera , Clusia and Guadua , elev. 1525 m. 5 July 2003, H.D. Clarke 10575, with R. Williams, C. Perry, J. Kelly, D. Gittens, S. Stern. Guiana. Mt. Wokomung, Little Ayanganna, upper slopes of highest point of Mount Wokomung massif. 5°4'53.1"N, 59°50'26.1"W. elev. 1525 m. Tepui bog on sandstone and peat, with Brocchinia , Bonnetia and Rapatea , elev. 1660 m. 6 July 2003, H.D. Clarke 10576, with R. Williams, C. Perry, J. Kelly, D. Gittens, S. Stern. Mt. Wokomung, area above third of four escarpments, 1 km NE of Mt. Wokomung, 5°4'30"N, 59°51'15"W. elev. 1490 m. dense forest on laterite, with Clusia , Euterpe and Licania , elev. 1490 m. 8 July 2003, H.D. Clarke 10802, with R. Williams, C. Perry, J. Kelly, D. Gittens, S. Stern. The material shows the additional feature of the species, the multistratose leaf margin with teeth on the margin and upper and lower surfaces. The species is otherwise reported from Suriname, Ecuador, and supposedly described from Jamaica (Maracaibo, Venezuela?)( Allen 2013; Steere 1948).

Figures

Figure 2. Brachymenium speciosum (Hook. & Wils.) Steere. A Part of leafy stem showing distorted leaves B tip of leaf showing thickened margin with teeth on margin and upper and lower surfaces, some of these appearing as double teeth C capsule showing rostrate operculum D peristome teeth mounted in Hoyer's solution, showing elongate exostome teeth erect on one half and reflexed on other half, the latter showing endostome lacking cilia and segments. The photographs were taken using a Leica DM 4 B Compound microscope, 5 x objective.