520 ASCLEPIADE® (Brown). 
examined, unless otherwise stated, are always taken after having boiled the flowers 
in water, thus more nearly approaching the dimensions of living flowers. The 
measurement of the staminal column is taken from its base to the level attained 
by the anther-appendages, whether these latter are erect or inflexed, and in the 
latter case does not comprise the full length of the appendages. Owing to 
their fleshy nature, the corona-lobes, when subjected to pressure, often have 
their original form altered, if not destroyed, and many species cannot be 
identified from descriptions because sufficient care has not been taken to ascertain 
the true form of the coronal structure, and there is sometimes much discrepancy 
between descriptions of the same plant. 
Series I. Filaments of the stamens free. Pollen of loose granules, each 
granule formed of 4 pollen-grains united in a tetrad or of 3-5 united in a 
row. 
Tribe I, PrrtpLoce£.—Anthers produced at the apex into a fleshy apiculus 
or small fleshy or filiform or rarely membranous appendage, connivent over the 
style-apex and frequently connate at their tips. Pollen-carriers spathulate, 
trumpet-shaped or trowel-shaped, sometimes bipartite, horny, furnished with an 
adhesive gland at the base, not attached to the pollen-grains, but holding them 
loosely in the blade or concave part. 
* Corolla with a distinct campanulate or cylindric tube 4-8 lin. long. 
+ Corona-lobes inserted on the corolla-tube distinctly above the base of the 
stamens. 
I. Cryptolepis.— Corona-lobes inserted at about the middle of the corolla-tube. 
Erect or twining shrubs or shrublets. 
II. Stomatostemma.—Corona-lobes clavate, inserted at the mouth of the 
corolla-tube. Stamens inserted near the base of the corolla-tube; anthers 
with a glabrous apiculus. A climbing or bushy shrub. 
ILL. Ectadium.—Corona-lobes subulate, inserted at the mouth of the corolla- 
tube. Stamens inserted at the base of the corolla-tube; anthers with long 
filiform hairy appendages. Erect shrubs. 
+} Corona-lobes inserted on the corolla-tube with the stamens or occasionally 
upon their filaments. 
LV. Raphionacme.—Corona-lobes and stamens inserted above the middle or at 
the mouth of the corolla-tube. Herbs with a tuberous rootstock and dwarf or 
twining stems. 
** Corolla rotate or subrotate, lobed nearly to the base, withowt a distinct 
campanulate tube. Erect or climbing shrubs. 
V. Tacazzea.—Corona-lobes filiform and simple or linear and divided above 
into 2 or 3 filiform segments, inserted at or near the base of the staminal 
filaments and often shortly adnate to them. Stipules represented by a line 
connecting the bases of the petioles. : 
VI. Chlorocodon.—Corona-lobes broadly obcordate or obreniform with or with- 
out an erect or incurved dorsal process. Stipules well developed between the 
leaf-bases, toothed or frill-like. 
Series II. Filaments of the stamens, when present, connate around the ovary 
into a tube, which is sometimes very short and ring-like, the top of the tube 
or the anthers or both udnate to the dilated part of the style. Pollen- 
contents of each anther-cell united into 1 or 2 waxy masses. Pollen 
carriers quadrate, turgid or rarely dorsally flattened, with a suture down 
the back, never spathulate or trumpet-shaped, 
* Pollen-masses 2 in each anther-cell, eaceedingly minute and distinct or the 
2 ave combined into one marked with a longitudinal suture and sometimes 
separable, seated directly on the pollen-carriers or upon @ broad flap-like 
caudicle on their upper part in fours or in pairs. Pollen-carriers very 
minute, subquadrate, rather soft, pale-coloured. 
