300 LXXXV. ASCLEPIADEZ (BROWN). [| Xysmalobium. 
All species in which the coronal-lobes are very thick or laterally compressed, 
with or without tecth or keels on their inner face, or, if dorsally flattened, are 
still comparatively thick and entirely without keels or have only 1 rather stout 
longitudinal median keel, but no filiform horn or tongue-like process on the inner 
face, solid, never cucullate complicate or cleft down the inner face, I refer to 
XYSMALOBIUM. 
Kanahia, which is also allied, and in coronal structure contains species referable 
to both Xysmalobium and Asclepias, may be retained as distinct from botii by its 
inflorescence. 
Corolla reflexed from the base, (and see 7, X. fra- 
ternum). 
Leaves narrowly linear, 33-6 in. long, not reticu- 
lately veined beneath ; coronal-lobes very small, 
entirely adnate to the staminal-column. 
Coronal-lobes ovate, a minute tooth alternating 
with them . cC : . : . lL. X. decipiens. 
Coronal-lobes linear or linear-oblong, no tooth 
alternating with them . : : . 
Leaves varying from linear to elongate-oblong or 
oblong-lanceolate, not more than 3 in. long, re- 
ticulately veined beneath; coronal-lobes free, 
ascending or radiating from the staminal- 
column. 
Midrib of leaves densely tomentose; corolla-lobes 
43 lin. long - : 4 : : : 
Midrib of leaves not tomentose; corolla-lobes 2-23 
lin. long. 
Leaves ascending; coronal-lobes arising at the 
base of the staminal-column close to the 
corolla. : : 3 - . 4, X, reticulatum. 
Leaves widely spreading ; coronal-lobes arising 
3 lin. above the base of the staminal- 
2. X. Holubis. 
18. X. sesstle. 
column . é : ‘ : ‘ . 5. X. heudelotianum. 
Corolla not reflexed from the base 3 lobes spreading or 
ascending. 
Leaves linear, %-2 lin. broad ; coronal-lobes minute. 3. X. gramineum. 
Leaves 4-2 in. broad, never exactly linear but 
sometimes very long and narrow, and then 
gradually tapering from base to apex. 
*Leaves rounded, truncate or cordate at the base 
and as broad or broader there than above. 
Leaves elongated, gradually tapering from the 
base to the apex. 
Apex of the style produced beyond the anther- 
appendages . : : ; : ook 
Apex of the style not produced beyond the 
anther-appendages. 
Corolla bearded with woolly hairs on the 
margins and tips of the lobes inside. 
Corolla-lobes 4-5 lin. long; coronal-lobes 
scarcely reaching to the base of the 
anthers : ; ‘ é . 10, X. dispar. 
Corolla-lobes 23-23 lin. long; coronal- 
lobes reaching much above the base 
of the anthers ; : : . 11. X. barbigerum. 
. X. angolense. 
bo 
