232 CLIV. ERIOCAULEZ (BROWN). [ Lriocaulon. 
North Asia, China, Japan, and North America, one species in the British Isles, other- 
wise absent from Europe. 
In using the following key to the species actual measurements must be made, 
they cannot be guessed; and it is necessary to be quite certain that the female 
flower under examination is perfect, because the sepals in some of the species are 
most easily detached ; also, in some of the species, the two lateral sepals are large and 
conspicuous, whilst the third sepal is very slender and sometimes clings to the petals, 
therefore being easily overlooked ; hence it requires great care in many cases to make 
sure of the correct number of sepals; the number of petals, however, in most cases, 
corresponds with the number of the sepals. 
Involucral-bracts (at least in the younger heads) spread- 
ing and radiating beyond the flowering part of the 
heads; female flowers with 3 sepals and 3 petals. 
(See also 30, EF. Schlechteri, in which they are said 
to be slightly longer than the flowers, but are not 
described as radiating.) 
Involucral-bracts always radiating; peduncles 1—2} 
in, long. 
Tnvolucre 1-2 lin. in diam. ; receptacle glabrous. 2. E. pumilum. 
Involucre 23-4 lin. in diam.; receptacle densely : 
pilose ‘ : : .. . 8. E, xeranthemoides. 
Involucral-bracts radiating in the younger heads, 
afterwards reflexed against the peduncle and 
partly hidden by the flowers ; peduncles 5-8 in. 
long 3 = 5 - : ° c . 28. EH. infaustum. 
Involucral-bracts never radiately spreading beyond the 
flowering part of the head. (In 1, ZH. longipeta- 
lum, erect, forming a campanulate cup slightly 
exceeding the disk.) 
Female flowers without petals and sometimes without 
sepals also ; leaves 1—3 lin. broad, linear, tapering 
to a very fine point or almost capillary. 
Heads pale, brown; sepals of the female flowers 
entirely absent or 2 and filiform, placed at 
the middle of pedicel 4 5 4 “ 
Heads dark chestnut or blackish; sepals of the 
female flowers 2, linear-lanceolate, acute, placed 
close under the ovary ; sepals of the male 
flowers free . . ‘ : : : . 87. H. amboense. 
Heads pale brown? sepals of the female flowers 
unequal, narrowly linear; sepals of the male ‘ 
flowers connate . . : : . 38. E. Stuhlmann. 
Female flowers with sepals and petals always present. 
Female flowers with 2 sepals and 2 petals. (See 
also 34, H#. gilgianum, of which the number of 
sepals and petals is not stated.) 
A very small annual, }-3 in. high ; peduncles not 
longer than the leaves; one of the petals 
very much longer than the rest and pro- 
truded much beyond the sepals . . . 1. E. longipetalwm. 
Plant 1-43 in. high ; peduncles 2-6 times as long 
as the leaves; petals equal or subequal . . 33. E. mutatum. 
Female flowers with 2 sepals and 3 petals: sepals of 
the male flowers very different from those of 
the females. 
36. #. Heudelotii. 
