Nuytsia 7(2): 161-182(1990) 
173 
13a. Glumes less than 3 mm long, leaves glabrous, (except for ciliate margins), 
nut less than 1.2 mm long; in sandy soils F. densa 
b. Glumes greater than 3 mm long, leaves hairy (often sparsely), 
nut greater than 1.2 mm long; in gravelly soils F. xyridis 
14a. Glumes with ciliate margins (sometimes obscure), 
conspicuously red gland-dotted, leafy plants with glabrous styles 15 
b. Glumes glabrous, not or inconspicuously gland-dotted, leafy or leafless, 
styles glabrous or hairy 23 
15a. Leaves flat, 2-4 mm wide, glumes greater than 4.5 mm long with thickened 
raised mid-nerve, nut pale 16 
b. Leaves incurved or terete, less than 2 mm wide, 
other characters not combined 17 
16a. Nut pyriform, style with large bulbous base 6. F. dunlopii 
b. Nut unequally trigonous, style with tapering base F. recta 
17a. Mature nuts white or pale brown, glumes obtuse with a 
conspicuous yellowish stripe on either side of the central nerve 18 
b. Mature nuts brown or black, glumes acute, central nerve only conspicuous 20 
18a. Glumes greater than 3 mm long, stems with fine stiff hairs, 
nut 0.9- 1.4 mm long, somewhat flattened on back F. sp. B 
b. Glumes less than 3 mm long, stem scabrid, nut less than 0.9 mm long, 
somewhat rounded on back 19 
19a. Nut sub-globular, glumes densely overlapping, spikelels obtuse, 
style only slightly twisted at maturity F. sphaecocephala 
b. Nut obovoid, constricted just below middle, glumes less dense, 
spikclct acute, style strongly twisted at maturity F . trigastrocarya 
20a. Fertile glumes mucronate, nerve tip extending well past glume margin, 
leaf sheaths with wide conspicuous hyaline margins, leaves scabrid on 
margins or smooth 9. F. simulans 
b. Fertile glumes acute, nerve tip not extending past glume margin, 
if leaf sheaths with wide conspicuous hyaline margins then leaves hairy 21 
21a. Nut 3-lobed, sub-globular, foliage densely scabrid F. leucocolea 
b. Nut not 3-lobed, flattened on back, foliage sparsely scabrid 22 
22a. Glumes greater than 4.7 mm long, nut broadly ovate to cuneate, 
usually tuberculate, epidermal cells hexagon^ or isodiamctric F. cardiocarpa 
b. Glumes less than 4.7 mm long, nut obovate, smooth, epidermal cells 
conspicuously transversely oblong in vertical rows on each face F. sp. C 
23a. Nut abruptly constricted above base, style either with hyaline margin or 
dense tuft of hairs in upper portion, spikclets generally greater than 5 mm wide 24 
b. Nut gradually narrowed below, style glabrous or sparsely ciliate, 
spikelets less than 5 mm wide 25 
