ROSACEAE. — PRUNUS 231 
Subsect. 6. LOBOPETALUM, p. 241. 
Ser. 1. HETEROCALXX, p. 241. 
CLAVIS SPECIERUM, QUARUM FLORES SUPPETUNT. 
The two species of which the flowers are not yet known cannot be compared 
with the others and therefore are only mentioned here; the material available is 
not yet sufficient to form a clear idea of the affinity of the species in this group. 
Styli glabri. 
Pedicelli parce pilosi v. glabri; involucra ante anthesin decidua v. paucissima 
persistentia; cupula glabra v. basi tantum villosa. 
Pedunculus 5-9 mm. longus, laxe hirtellus; pedicelli laxe villosiusculi; cupula 
subanguste campanulata, basi densiuscule hirtella, superne glabra; petala 
biloba sinu triangulari-aperto; stamina 34, petalis triente breviora. 
P. scopulorum, 
Pedunculus nullus; pedicelli glaberrimi; eupula breviter tubulosa, glabra; 
petala inciso-biloba, sinu angusto; stamina 54, petalis quarta acd ae ven 
. glabra. 
Pedicelli dense pilosi, involucris arcte adhaerentibus inclusi v. subinclusi; cupula 
dense pilosa v. superne glabra; petala biloba, sinu triangulari-aperto. 
Cupula campanulata; petala orbicularia; stamina 43, petalis triente breviora. 
P. involucrata. 
Cupula breviter tubulosa; petala basi cuneata, ovato-oblonga; stamina 51, 
petalis.acquilonf& . oy 195-4. 2a e cU E AA P. hirtipes. 
Styli inferne pilosi; pedicelli floresque dense pilosi. 
Involucra sub anthesi fere omnia caduca. Pedicelli 12-14 mm. longi; cupula 
tubulosa; sepala intus glabra; petala ovalia, inciso-biloba, sinu angustissimo; 
stamina 39, petalis triente breviora . . . . . «= >.» T. Schneideriana. 
Involucra arcte adhaerentia; pedicelli 6-9 mm. longi, inclusi v. subinclusi; cupula 
campanulata; sepala intus breviter villosa; petala ovata, brevissime emar- 
ginata; stamina 33, petalis aequilonga. . . . . es» . P. Duclouzii. 
Species quarum flores ignoti. pes i 
leres donde Folia majuscula lata, dentibus parvulis v. mediocribus, latis, 
euspidatis. 
Petioli 8-10 mm. longi, glandulas 2 crassas gerentes; lamina 12-13.5 em. longa, 
6.5-8.4 em. lata, dentibus glandula valida breviter conica terminatis. P. ampla. 
Petioli 10-16 mm. longi, aut maculas 2 vix tumidas aut glandulas latas (interdum 
laminae basi insidentes) gerentes; lamina 6.5-13 cm. longa, 4-7.4 cm. lata, 
dentibus glandula punctiformi terminatis . . . . ..- .. . . P. malifolia. 
Ser. 2. CYCLAMINIUM, p. 243. 
I assume that the species of which the flowers are unknown belong here, because 
the leaves resemble closely those of P. Dielsiana. 
Ramuli hornotini glabri. Folia supra glabra. Involucrum magnum, sub anthesi 
persistens. Flores (2-)3-6 umbellati v. subumbellati. 
Petioli glabri, lamina subtus glabra v. in nervis initio parce pilosa. Bracteae 
brevius glanduloso-fimbriatae; pedicelli laxiuscule villosi v. superne villosi; 
flores coaetanei; cupula glabra; petalorum sinus anguste t , ls 
