80 James Small. 
feature of the Lobelioideae but the appendages are of scarcely less 
importance in view of the great significance of these structures in 
the Compositae. Apical appendages are present in most genera. 
In Siphocampylus some of the anthers have rigid, horny or 
membranous elongations of the connective, and the others have 
a tuft of hairs at the apex. There may be three teeth as in 5 
psilophyllus, S. asper (Fig. 46) and 5. lantanifolius (Figs. 47-48), or 
only two as in S. aggregatns (Fig. 50). The lateral anthers in 
S. lantanifolius have the appendages very slightly developed but 
it is quite clear in the median anther (Fig. 48). The appendages 
may be obtuse or acute (cp. Figs. 48, 49 and 52). There are 
two teeth in Lobelia corymbosa (Fig. 51), Pratia macrodon (Fig. 52) 
and Rhizocephalum , and three in Laurentia repens. 
Figs. 43-52. Floral details of the Lobelioideae. 
Fio. 43. Lysipomia muscoides, ovary; 44, ditto, style; 45, Siphocampylus 
aspey, style ; 46, ditto, apical part of anther tube; '47, 5, lantanifolius, apical 
part of anther tube ; 48, ditto, median anther to show (a) appendage, and 
(p) pollen sacs; 49, Laurentia repens, apical appendage of anther, 50, 
Siphocampylus aggregatus, style and stamens to show apical appendages , 51, 
Lobelia corymbosa, anther tube to show apical appendages ; 52, Pratia macrodon , 
two of the five appendaged stamens. 
All five anthers may have hairy appendages and be more or 
less equal, as in Monopsis and Brighamia ; or tjhe two smaller 
anthers only may be hairy, as in Clermontia , Delissea, Sclerotheca 
and Hovellia ; or the condition may vary in the genus; all or only 
the two smaller anthers have hairy appendages in Cyanea and 
Lysipomia , or the appendages of these two anthers may be teeth or 
hairs, the other three being naked as in Pratia and Isotoma ; 
while in Centropogon one section has the two smaller anthers with 
teeth, another has them with hairs and the third has all five 
anthers with no appendages at all. Lobelia shows a variation 
similar to that in Centropogon. In HyPsela there may be one tooth 
or a few bristles at the apex of the two smaller anthers. 
