118 SELAGINEH (Rolfe). [ Walafrida. 
Calyx 14-14 lin. long; corolla- 
tube 2-24 lin. long ... (Lt) polycephala. 
Middle lobe of calyx minute or 
obsolete ... dus ves .. (15) congesta. 
Corolla-tube #-1} lin, (rarely 14 lin.) 
long: 
Largest leaves 4-7 lin. long: 
Leaves linear, often rather 
fleshy : 
Bracts ovate-oblong, and 
as well as the leaves 
distinctly fleshy ... (16) crassifolia. 
Bracts —_ oblong-lanceo- 
late, not or scarcely 
fleshy... Re ... (17) Nachtigali. 
Leaves filiform or nearly so.. (18) tenuifolia. 
Largest leaves 1~3 lin. long; 
Leaves with minute blackish 
dots es oe ... (19) distans. 
Leaves concolorous : 
Branches puberulous, 
often minutely so; 
Bracts _ linear-ob- 
long : 
Side-lobes of 
calyx sub- 
acute .- (20) diffusa. 
Side-lobes of 
calyx obtuse (21) gracilis. 
Bracts ovate-oblong; 
Calyx #2 lin. 
long; leaves 
spreading .., (22) squarroga. 
Calyx 1. lin. 
long; leaves 
not spread- 
Ing 3s. -+» (23) articulata. 
Branches strongly and 
closely pubescent ... (24) pubescens. 
{i{Flowers in roundish or oblong heads, 
which are numerous and mostly arranged 
on short lateral branchlets, forming elon- 
gated narrow’ panicles towards the 
summit of the branches;  corolla-tube 
f-1} lin. long: — 
Leaves oblong-linear and rather rigid ; 
panicles short ; 
Bracts linear-oblong.., tee ... (25) micrantha. 
Bracts ovate-oblong ... si +» (26) saxatilis. 
Leaves not rigid; panicles generally 
much elongated ; 
Leaves narrow, often more or less 
filiform... «4... a4. (27) densiflora. 
Leaves linear, sometimes lanceolate- 
linear, not filiform be ... (28) paniculata. 
{yi {Flowers usually in elongated narrow spikes : 
Spikes usually aggregated into lax 
panicles ... ive sos oes --» (29) geniculata. 
Spikes numerous, aggregated into com. 
pact panicles ... bbe .-. (80) polystachya. 
** Annual, decumbent, 2-3 in. high .,. ai +». (81) minuta, 
