Eryngium. 
109 
ft Caulis ±- elatus, us(iue nielralis (laiilum 
in E. carlinae saei)C subnullus), i)luriruiTaliis, 
raniis repetile cyinosp ranmlosis; raro bro- 
vissiinus scd simplex el inonocephalus aul 
— - elongalns ol inferne subbis Irifnrcalns. 
Q Folia subito peliolala, basi cordala vol 
raro ovata Sed. XXII. Petiolata Wolff. 
OO f'olia sensim in petiolum longuni vel 
brevem anguslata. 
/\ Folia iinpriinis sublus snbunicoslala. 
Oracleae involucralcs virides, vix 
rigidulae, angustae Sect. XXIll. Serrata WolfT. 
Folia in parte media angusta longi- 
ludinali cum petiolo zh manifeste 
fislulosa ibique angusle parallelinervia. 
Caulis perbrevis et monocephalus vtd 
zh elongatus et inferne semel (ra- 
rissime bis) Irifurcatus, ramis zh elon- 
gatis. Species alpin ae andinae el 
mexicanae Sect. X.XI\. Stellata Wolff. 
' AA A Folia nervis paucis vel subnumerosis 
in aream angustam vel latiusculam 
dispositis percursa. Inflorescentia 
repetite cymosa. 
□ Bracteae involucrales rigidae, in- 
ciso-serratae (rarointegrae),supra 
nitenti-albidae. Capitula nigri- 
canti-violacea, semper receptacnlo 
ultra capitula elongato comata; 
in una specie [E. comosim) folia 
basalia saepe pinnaiifida Sect. XXV. Carliniformia Wolff. 
□ □ Bracteae involucrales angustae, 
virides, saepe brevissimae; florales 
flores superantes vel eis breviores. 
Capitula coma vera non instrucla. 
Sect. XXVI. Foetida Wolff. 
ß. Caules saepissime plures tenuissinu vel tenues pro- 
strati, primo semel vel bis dichasialiter divisi, dein 
in monochasia saepe elongala producli. Capitula 
cylindrica; bracteae involucrales parvae; fructus quoad 
squamas ad » Isophlyctidia « pertinentes .... Sect. XX. Flaccida ^^'olff. 
b. Folia usque ad laminain elongatam angustam vel latam 
et vaginam saepissime eximie evolutam reducta. Xervi 
paralleli vel in foliis zfc lanciformibus leviter divergentes, 
aut in aream medianam angustam vd latam dispositi. 
Species eximie »monocotyloideae«, pleraeque austro- 
americanae. 
u. Folia obovato-rotundata usquo oblongo-linearia; nervi 
in aream latam dispositi vel leviter divergentes. In- 
florescentia depauperata. Capitula colorata, globosa 
usque ovoidea; fructus quoad squamas ad »Iletoro- 
pblyctidia« pertinentes Sect. XXVII. Sanguisorbiformia \N olff. 
ß. Folia zb elongata; nervi subparalleli vel leviter diver- 
gentes vel ex area parallelinervi parum evoluta leviter 
