LXXXV. ASCLEPIADEiE (bROWN). 237 



always radiately spreading; 



staminal column subsessile, 



with very broad rigid anther- 

 wings forming a broad truncate 



cone 22. Pachycaepfs. 



Coronal-lobes laterally flattened or 



at least measuring as much 



from front to back as they do 



in breadth, cucullate or com- 

 plicate or channelled down the 



face or with the margins in- 



ttexed 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 iuner 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. XYSStALOBnTJl. 

 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. Margaeetta. 



Teibb IV. Marsdenleae. — Stamens with filaments connate into a tube; 

 antheirs erect or incumbent on the top of the style and adnate to its dilated part 

 at their base, loith a membranous fiat or inflated appendage. Pollen-contents of 

 each anfher-cell united into one waxy 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 rarely pale. 



*Corona of 5 distinct fleshy lobes or 5 pairs of ridges 

 arising from and adnate to the corolla-tube, none 



