phytotaxa - Magnolia Press

tomentose margins (rarely without spines) (2); peduncular bracts narrow, elongate, ribbed, scarcely brown tomentose,
without spines (rarely with few spines) (3); peduncular bracts broad, ridged, densely covered with short, straight,
swollen-based, vertically oriented spines, these terete, whitish-brown proximally, brown distally, without tomentum (4);
peduncular bracts broad, ribbed, densely brown tomentose, without spines (very rarely with a few spines) (5); peduncular
bracts broad, ribbed or ridged, densely covered with felty, reddish-brown tomentum, sparsely covered with short,
scarcely swollen-based, diagonally oriented, flattened spines, whitish-brown proximally, brown distally, with tomentose
margins (6); peduncular bracts broad, ribbed with several more prominent, lighter colored ribs, brown, scarcely or not
tomentose, without spines (rarely with a few spines) (7); peduncular bracts narrow, ribbed, densely whitish-brown
tomentose, not spiny (8); peduncular bracts broad, the surfaces ribbed or ridged, brown tomentose or glabrous, sparsely
to moderately covered with short, straight or sinuous, briefly swollen-based, diagonally or vertically oriented spines,
these flattened or triangular in cross-section, whitish-brown proximally, black or brown distally, with tomentose margins
(9); peduncular bracts broad, the surfaces deeply ridged, dark brown tomentose, sparsely covered with long, straight or
sinuous spines, the bases scarcely swollen but running directly into the ridges of the bract and lying flat against the bract
surface, flattened in cross-section, brown proximally and distally, with tomentose margins (10). (peduncbract)
10. Rachillae brown tomentose initially (1); rachillae glabrous or scarcely tomentose initially (2). Recorded only from
inflorescences with flowers because tomentum is early deciduous. (tomentum)
11. Stamens five to seven (1); stamens eight to 12 (2). (stamenno)
12. Fruit surfaces uneven with numerous, subepidermal, short, often branching (Y-shaped) fibers (1); fruit surfaces
smooth, without any apparent subepidermal fibers (2); fruit surfaces uneven with numerous, subepidermal, long,
branching fibers (3); fruit surfaces bumpy from numerous, subepidermal, short, oblique fibers (4). (fruitsurf)
13. Fruiting corollas less than one quarter as long as fruits (1); fruiting corollas to half as long as fruits (2). (frcorolla)
14. Fruiting corollas splitting irregularly into 3 lobes, the lobes often splitting again (1); fruiting corollas not or scarcely
splitting, tending to remain cupular (2). (splitting)
15. Endocarps globose to obovoid with rounded or slightly peaked apices, the pores lateral (1); endocarps narrowly
ellipsoid with rounded apices, the pores lateral (2); endocarps broadly obovoid with flattened apices, the pores lateral on
or near flattened apices (3); endocarps ovoid to obovoid with prominent, peaked apices, the pores lateral (4). (endocarps)
Traits
Abbreviations in parentheses at the end of each variable are the column labels in the Data Matrix.
1. Stems solitary (1); stems clustered (2). (stems)
A REVISION OF DESMONCUS (ARECACEAE)
Phytotaxa 35 © 2011 Magnolia Press 51