154 THE JOURNAL OF BOTANY 
next to Perymeniuwm, to which it is much more closely allied 
than to Melanthera or its neutral-rayed analogue Echinocephalum 
rdn. 
None of the six species here referred to Steiractinia appears 
to have been previously described, unless one or both of the two 
species of Pik pmie published by ians in 1858 (Ann. Sci. Nat. 
ser. 4, ix. 38-39), the types of which (Triana, 1520, specimens 
(0. 
seen, belong here. Other species are doubtless to be found in 
herbaria among the genera Oyedea and Perymenium. 
Key To SPECIEs. 
1-4, Disk 1:5-1'8 em. thick or less; outer phyllaries 
. or less broad. 
1. Stem and sided leaf-surface densely and softly 
long-pilose ; Ecuador . 1. mollis. 
2-4. Stem and under leaf-surface with shorter less 
e, acute, not contracte 
2. Tavare cre 6-7 m De enka vte 2. Schlimii. 
3. Involucre 11-12 m 2 ge ig oyede@oides, 
4, Outer phyllaries oval, aly seceotea 
belo middle 
5-6. Disk 2cm. broad; outer phyllaries 5-8 mm. broad. 
5. Outer phyllaries broadly oblong, not nar- 
. ocanensis, 
6. Outer ae peseed olden ‘strongly contracted 
nee ow the 6. grandiceps, 
x 2-3 m. altus ramos 
serrulata 3-nervia supra viridia sors subaspere strigosa infra 
dense molliterque lanato-pilosa juventate subsericea iiic 
longa 1:6-4:3 cm. lata. Petioli arse hac 3°5-6'5 mm. icrigi i 
ae im og er Capitula in pedunculis dense pilosis 
0-7-4 cm. longis 1-cephalis nee disposi ramos et ramulos 
bewnagnanbibes 4-5 cm. lata. Discus 8-10 mm. altus 1:5 cm. 
dimetente. Involucri 3-seriati 11- 13 mm. alti squame patie 
extime ca. 4 oblongo-ovales obtuse appresse pilose + glandulose 
supra subherbacee 1 cm. longe 3:7 mm. late; medic ei dee 
ovales vel spathulato-ovales submembranacese stants superne 
nisto-dents ate strigillose et glandulose; intime similes membra- 
nacez fructu discum subequantes. Radii ca. 10 flavi oblongi vel 
m. 
scentes neutrales. Corolle disci flave glabre tubulo sensim _ 
faucem ampliato 5°8 mm. long (tubulo 2-2-2 mm. 
subscarioss nse subacute margine ciliolate e latere = 
Scaia tate 7-5-8 mm. longe. Achenia submatura paullum incrassata 
runneo-fusea es puncticulate multissimo-striatulata in 
