Pe 
THE YUCCEAE. 131 
Xanthorrhoea 71 
Yuca, Park. (72) 
foliis Aloes, Bauh. (72) 
foliis filamentosis, Moris. (47) 
Perana, Gerarde. (72) 
Yucca 27, 28, 29, 42, 120-124. pl. 99. 
acaulis (114) 
acrotricha (114) 
acuminata (72, 74, 79) 
acutifolia (74) 
agavoides (96) 
alba-spica (54, 57) 
X albella 115 
albospica (57, 82, 105) 
aletriformis (114) 
aloefolia versicolor (90) 
aloifolia (39) 45, 81, 82, 84, 86, 87, 88, 
89, 90 (94) 110, 116, 122, 123, 124, 127, 
129. pl. 45, 49, 84, f. 6, 96 
— arcuata 90, 92 
— — Menandi 90 
— — tenuifolia 90 
— conspicua 89, 92 
— Draconis 89, 91, 95 
— — conspicua 89 
— flexifolia (92) 
— marginata 89, 90 
— Menandi 90, 93, 127. pl. 50 
— purpurea 89, 90 
— quadricolor (91) 
— roseo-marginata (91) 
— stenophylla (88) 
— tenuifolia 90, 93 
— tricolor 89, 91 
— variegata (82, 90) 
— Yucatana 90, 93 
x Andreana 77 
angustifolia (54, 56, 60, 79, 82, 83, 114) 
— elata (56) 
— mollis (63 
— radiosa (56) 
— stricta (61, 64) 
angustissima 45, 58, 126, 129. pl. 23, 
a, a4. /. 1, 68,7. 6, 98 
arborescens (41, 89) 
arcuata (92) 
argospatha (96) 
argyrophylla (105) 
Arkansana 46, 53, 54,55, 62, 63, 126, 
129. pl. 80, 31, 83, f. 7, 92 
armata (88) , 
aspera (96) 
Atkinsi (90) 
australis 46, 100, 103, 108-9 (117) 119, 
120, 128, 129. pl. 60,61, 85, f. 2,96 
baccata 46, 109 (118, 119) 121, 122, 128, 
129, pl. 68, 69, 85,f. 4, 97 
Yucca baccata australis (103, 105-6, 110, 
111, 113) 
— circinata (103) 
— fragilifolia (103) 
— genuina (111) 
— Hystrix (103, 106) 
— macrocarpa (104, 110, 111, 117) 
—- periculosa (103) 
— scabrifolia (103) 
Barrancasecca (114) 
Boerhaavii (80) 
Boscii (114) 
Brasiliensis (75) 
brevifolla (41) 46, 100 (103) 127, 128. 
pl. 57, 58, 69, 96 
Californica (39, 95) 
canaliculata (97, 105) 
— filifera (103) 
--— pendula (97) 
X Carrierei 74 
circinata (103, 104, 106) 
concayva (49) 
conspicua (92) 
constricta 45, 54 (56) 126, 129, pl. 20, 
21, f. 1, 83,f. 4, 92 
contorta (67, 96) 
cornuta (82, 96) 
crenulata (85) 
X Deleuili 67, 74 
De Smetiana 45, 87, 127, pl. 48 
X dracaenoides 77 
Draco (91) 
Draconis (88, 91) 
— arborescens (41) 
elata (56, 58) 
x elegantissima 115 
elephantipes 45, 71, 92, 94, 123, 127, 
129, pl. 45, 51, 82, 84,f. 7 
Ellacombei (75) 
X Elmensis 116 
Engelmanni (39) 
X ensifera 79 
ensifolia (80) 
exigua (52) 
Bylesii (80) 
falcata (80) 
filamentosa (39) 44, 46, 47 (48, 49, 
50-53, 64) 81, 82, 83, 87, 116, 120, 122, 
125, 126. pl. 8, 12, 89, 91 
— Antwerpensis (51) 
— aurea elegantissima (48) 
— bicolor (48) 
— bracteata 47, 48, 125. pl. 9, 90 
concava 47, 49, 84, 125, 129, pl. 20, 
82,f. 1,90 
flaccida (49) 
—— glaucescens (51, 82) 
— grandiflora (52) 
