Specielle Blttthenmorphologie und Systematik. — Dicotyledonen. ßQ5 



Subser. 8. Pungentes. Phyll. rigida, pungentia, in ramo articulata v. rarius 0. 

 Capitula globosa v. spicae cylindraceae. 



A. Aphyllae. Rami spinescentes, phyllodiis nullis. Capitula globosa. 



B. Plurinerves. Phyllodia 2— pluriuervia v. teretia et enervia. Cap. globosa. 



C. Uninerves. Phyll. 1-nervia. Capitula glabra. 



D. Spicatae. Phyll. 1— 3-nervia. Spicae cylindraceae oblongae v. ovoideae. 

 Subser. 4. Calamiformes. Phyll. anguste linearia, teretia v. tetragoua. rarius leviter 



compressa, obtusa v. mucrone innocuo acuta, in ramo articulata. 1— 3-nervia, v. 

 rarius 0. Capitula globosa. 



A. S üb aphyllae. Phyllodia v. tenuissima, ramis similia. 



B. Plurinerves. Phyll. nervis utrinque 2 — 3-striata. 



C. Unninerves. Phyll. nervis utrinque solitariis plana v. tetragona v. enervia. 

 Subser. 5. Brunioideae. Phyllodia numerosa parva, verticillata v. fasciculata, obtusa 



v. apiculo innocuo acuta. Capitula globosa. 

 Subser. 6. Uninerves. Phyll. plana non pungentia (exceptis speciebus paucis latifoliis) 

 uninervia v. rarius 2-nervia. Capitula globosa. 



A. Spinescentes. Rami spinescentes. Phyllodia parva. Glandula margiualis 0. 

 Stipulae minutae v. 0. Pedunculi 1-cephali. 



B. Armatae. Rami non spinesc. Stipulae saepius persistentes, spinescentes v. 

 subulatae. Phyllodia rarius 1 '/a-pollicaria, costa subcentrali. Glandula marginalis 0. 

 Pedunculi 1-cephali. 



C. Trianguläres. Rami rigidi, interdum spinescentes. Stipulae spinescentes sub- 

 ulatae v. 0. Phyllodia parvula, costa saepius margini inferiori approximata, 

 latere superiore rotundata v. angulata saepeque glandulifera. Pedunculi 1-cephali. 



D. Brevifolia. Rami non spinescentes. Stipulae minutae v. 0. Phyll. saepius 

 infrapollicaria, lata v. angusta, non pungentia. Pedunculi 1-cephali. 



E. Angustifoliae. Rami non spinesc. Stipulae saepius minutae v. 0, rarius 

 spinesc. Phyll. ultrapollicaria , oblongo - lanc. v. linearia, costa subcentrali. 

 Pedunculi 1-cephali. 



F. Racemosae. Rami non spinesc. Stipulae minutae v. 0. Phyllodia varia. 

 Pedunculi plerique v. omnes pleiocephali. 



Subser. 7. Plurinerves. Phyllodia plana, mutica (exceptis speciebus paucis lati- 

 foliis), utrinque 2-v. plurinervia. Capitula globosa, solitaria v. fasciculata. 



A. Armatae. Stipulae spinesc. Phyllodia falcata, subulato - acuminata v. fere 

 pungentia. 



B. Trianguläres. Stipulae setosae v. minutae. Phyllodia parva, late falcato-ovata 

 v. triangularia, saepe subpungentia. 



C. Brevifoliae. Stip. inconspicuae. Phyll. parvula, obtusissima, saepe undulata. 



D. Oligoneurae. Phyll. oblongo-lanceol. v-linearia, rectiuscula, utrinque 2— 3-nervia. 



E. Microneurae. Glabrae v. glaucae nee glutinosae. Phyll. crassiuscula nervis 

 tenuibus parallelis vix prominulis v. omnino inconspieuis. 



F. Nervosae. Saepe glutinosae, rarius cano-pubescentes. Phyll. reeta v. falcata, 

 nervis pluribus prominulis, rarius in phyllodio anguste 3. 



G. Dimidiatae. Phyll. saepius ampla, lata, valde obliqua, nervis 2—4 prominentibus 

 distantibus, inter nervös reticulato-penni venia. 



Subser. 8. Juliflorae. Phyll. varia, saepius complanata v. plurinervia. Spicae 

 cylindraceae v. rarius breviter oblongae. 



A. Rigidulae. Phyll. plana, saepe brevia. Spicae saepius densae. Flores 5-meri. 



B. Tetramerae. Phyll. plana, linearia lanceolata oblonga v. obovata. Spicae 

 saepe laxiusculae. Flores 4-meri. 



C. Steno phyllae. Phyll. lineari-subulata v. anguste linearia, saepius elongata v. 

 rectiuscula. Spicae densae, breves v. tenues. Flores parvi, 5-meri v. in speciebus 

 teretifoliis interdum 4-meri. 



D. Falcata e. Phyll. saepius ampla, plus minus falcata, apice basique angustata, 



