180 



Ign Urban: 



bung der Arten ziir Darstellung kommen, damit nicht Entgegengesetztes 

 mit einander verglichen Tvird, was leicht zu Irrthümern bei der Bestim- 

 mung Veranlassung geben kann. 



Clavis specierum, 

 I. Flores sessiles, cupulis calycoideis saepius plus minus inter sese coalitis. 



Ä. Folia apice rotundata v. obtusa, nervis lateralibus e median! parte 

 inferiore tantum prodeuntibus utrinque 2 v. 3 sublongitrorsis, 



a. Folia 2,5 — 4 cm. longa. CoroUa 4 — öjS mm. longa 



1. Seh. obwata Ch. Wright. 



■ 



b. Folia 4,5 — 6,5 cm longa. GoroUa 7 mm. longa 



3. Seh. arenaria Britton. 



raro 



spicuis 



a. Folia 2—3 mm. longe petiolata, aciiminata, margine anguste revo- 

 luta. Pedunculi in axillis solitarii , 1 -— 1 5 mm. longi 



2. Sek. didyma Cli. Wright. 



b. Folia 3 — 5 mm. longe petiolata, apice obtnsissima v. sensim an- 



gustata, plana. Pedunculi 



3. Seh. arenaria Britton 



0. Folia 3 — 8 mm. longe petiolata, margine plana subplanave. Pedun- 

 culi in axillis plerumque plures, 1 — 4 mm. longi. 



petiolum angustata 



a. Folia 4 



Corolla 2 



—8 mm. longe petiolata, basi acuta in petiolum anguswu.. 

 2,5 — 4 mm. longa 4. Seh. chrysophylhides Fhnch.^ 



ß. Folia 3 — 5 mm. longe petiolata, basi rotundata et in petio 



lum protracta. Corolla 4 — 5,5 mm. longa 



disjunctis. 



5. Seh. Sehreberi Gmel. 

 brevissime) pedicellati, cupulis calycoideis plan 



A. Flores ad nodos numerosi glomerati, pedunculis nuUis v. subnu 



6. Seh. muUifloi-a Urb. 



B. Pedunculi ad nodos solitarii v. bini, 1—1,5 cm. longi 



7. Seh. Harrisii IJrb. 



1. Schoepfia oboTata Ch. Wright, foliis 1,5—3 mm. longe peüo- 



latis, nunc obovatis apice rotundatis, nunc obovato - oblongis obtusis, 

 ad basin versus ciineatis, nervis lateralibus e mediani parte inferiore 

 prodeuntibus utrinque 2 v. 3 sublongitrorsis , margine planis v. «'i ' 



sub 



recurvatis, adultis 2,5-4 cm. longis, 1,5-2,5 cm. latis; pedunculi" i^^ 

 in axillis foHorum, 2—4 mm., raro -8 mm. longis, bifloris, raro i' 



" ■* *'''""'- " " cylindracea v. ovato - cyHndracea, 



'■L alt. coalita. lobis ovato - trianguU- 



cum lobis 5 



ribus; antlieris breviter ovatis; style 1,2—1,5 mm. longo; corolla in 

 flor. dolichost. cylindraceo-campanulata, cum lobis 4 mm. long»' ^^ 



