LXXXV. ASCLEPIADEZ (BROWN). 237 
always radiately spreading ; 
staminal column _ subsessile, 
with very broad rigid anther- 
wings forming a broad truncate 
cone. : ; J . 22, PACHYCARPUS, 
Coronal-lobes laterally flattened or 
at least measuring as much 
from front to back as they do 
in breadth, eueullate or com- 
plicate or channelled down the 
face or with the margins in- 
flexed and forming a tooth at 
the apex middle or base on 
each side, with or without a 
horn or other appendage within 
the cavity; staminal-column 
subsessile or stipitate, usually 
barrel-shaped : : . 21, ASCLEPIAS,. 
Coronal-lobes fleshy, solid, very 
thick, with or without keels or 
teeth on the inner face, or, if 
dorsally flattened, then with 
only 1 rather stout median 
keel, but no horn or tongue- 
like process on their inner face 
and not produced into a long 
horn-like point at their apex . 18. XysMALOBIUM. 
Coronal-lobes dorsally flattened or 
if concave or with incurved 
margins then always broader 
than they measure from front 
to back, rather thin, often 
with a terminal horn, usually 
with 2 parallel keels (never 
with 1 only,) and with or 
without 1 or more horns or 
appendages on the inner face . 19. ScHIzoGLOssUM. 
Coronal-lobes petal-like, coloured, 
complicate and claw-like at the 
basal part, which bears 2-3 
teeth, expanded above into a 
flat petaloid blade . . . 20. MARGARETTA, 
Tripe IV. Marsdeniese.— Stamens with filaments connate into a tube ; 
anthers erect or incumbent on the top of the style and adnate to its dilated part 
at their base, with a membranous flat or inflated appendage. Pollen-contents of 
each anther-cell united into one wary mass, Pollen-masses opaque, without a 
pellucid margin, attached in pairs to the pollen-carriers by long or short caudicles, 
erect or ascending or horizontal when in the anther-cells, or the caudicles attached 
to their middle, but never entirely pendulous, sometimes very minute and the 
caudicles extremely slender. Pollen-carriers hard and horny, with a dorsal 
suture, dark-coloured or rarel 'y pale, 
*Corona of 5 distinct fleshy lobes or 5 pa’rs of ridges 
arising from and adnate to the corolla-tube, none 
