Pachycarpus.] ASCLEPIADE& (Brown), 717 
Blade of the corona-lobes linear or linear- 
lancevlate, truncate, 1 lin. broad... (12) stenoglossus. 
Keels or fissured hump on the corona-lobes 
with the tips erect or directed inwards ; 
blade of the lobe not or (in P. concolor) 
rarely slightly and obtusely 3-lobed : 
Flowers in pairs or the lower in 2-flowered 
pedunculate maple lateral at the 
nodes... a ea .» (15) concolor. 
Flowers usually 3-4 eit kk at 
the nodes; peduncle none; corona- 
lobes dilated above the middle into an 
ovate blade : 
Corona-lobes scarcely dilated at the base, 
with the narrow keels not con- 
spicuously folded ; magne Meh 
llin. long... sae .. (8) natalensis. 
Corona-lobes dilated into distinct deltoid 
auricles at the base, with the narrow 
keels conspicuously folded longi- 
tudinally ; anther-wings 13 lin. long (9) plicatus. 
Flowers in pedunculate usually 3-6-flowered 
umbels : 
Corona-lobes dilated and concave or hood- 
like at the tips, white or pale yellow 
with a violet-purple stripe ... ... (13) schinzianus, 
Corona-lobes not dilated into concave or 
hood-like tips : 
Corona-lobes dark purple-brown : 
_ Leaves scabrous with short points (no 
hairs) on both sides; keels or 
hump on the corona-lobes large (16) transvaalensis, 
Leaves scabrous-pubescent with hairs 
on both sides ; keels or hump on : 
the corona-lobes rather small ... (17) insignis. 
Corona-lobes whitish or yellowish ... (18) decorus. 
** Leaf-blade 4-4 in. broad, 12-24 times as long as peouid: 
linear or narrowly linear-lanceolate ; corolla subglobose, 
pubescent outside : 
Style-apex produced into a beak much beyond the 
anther-appendages, with 5 small connivent lobes 
at the apex ... .. (25) rostratus. 
Style-apex shortly secede the tains 
very large, divided into 5 lobes 14-14 lin. tee 
stellately radiating .. hes . (26) stelliceps. 
Style-apex shorter than os more or less es by she 
anther-appendages, truncate or excavated, crenate 
or very shortly 5-lobed : 
Corolla lobed to 2 of the way down ; anther-appen- 
dages 3-34 lin. long; corona-lobes seauuniees 
erect edna the middie... se uae .» (22) linearis, 
Corolla not lobed beyond the middle ; ba GBT 
oe : corona-lobes horizontally 
long ; 
