8 Muhlenbergia, Volume 9 
EXPLANATION OF PLATE 3 
1. Z. amoenum Greene. Cotyledons 6.5mm. long by 3mm. 
wide; primordial leaf 5mm. long, 4 mm. wide, petiole and both 
surfaces long pubescent, lateral margins entire, broadly retuse 
at apex. 
2. T. dichotomum H. & A. Cotyledons 7mm. long, 3mm. 
wide; primordial leaf 4.5mm. long, 5mm. wide, glabrous on 
both surfaces, margins undulate-dentate, apex retuse, petiole 
sparsely pubescent. 
3. T. petrophilum Heller. Cotyledons 7 min. long, 3 mm. 
wide; primordial leaf 4.5mm. long, 4mm. wide, both surfaces 
pubescent, margins remotely undulate-dentate, apex truncate, 
mucronate, petiole pubescent. 
4. 7. neolagopus Loja. Cotvledons 7mm. long, 2mm. 
wide; primordial leaf 3mm. long, 4.5mm. wide, upper surface 
pubescent, lower glabrous, margins slightly undulate, apex 
broadly obtuse, mucronate, petiole pubescent. 
5. 7. oltvaceum Greene. Cotyledons 6mm. long, 3mm. 
wide; primordial leaf 3mm. long, 4.5inm. wide, glabrous on 
both surfaces, margins entire, apex emarginate, petiole pubescent. 
6. T. albopurpureum T. & G. Cotyledons 7mm. long, 
2mm. wide; primordial leaf 3mm. long, 4mm. wide, glabrous 
on both surfaces, apex truncate, mucronate, petiole pubescent, 
margins slightly undulate. 
7. 7. Fellert Kennedy. Cotyledons 6mm. long, 2.5 mm. 
wide; primordial leaf 3mm. long, 4mm. wide, a few hairs on 
the upper surface, apex truncate, mucronate, petiole sparsely 
pubescent. 
5. 7. mercedense Kennedy. Cotyledons very small, 4mm. 
long, 21mm. wide, the petiole decurrent with blade; primordial 
leaf 3.5mm. long, 4mm. wide, apex emarginate, all parts glab- 
rous, or an occasional hair on the petiole. 
