1921 J REHDER, NEW SPECIES, VARIETIES AND COMBINATIONS 25 



Weston's varietal name has been adopted here though he wrote "Per- 

 sica-duplex," but as in no other case he used a similar hyphenated name 

 for a variety, I take the repetition of the specific name for a slip of the 



pen. 



This form is an old inhabitant of gardens and according to De- 

 caisne in Revue Horticole, 1851, p. 221, where he gives a good colored 

 plate of this form, it was first mentioned in 1636 by Guy de La Brosse in 

 his Description du Jardin Royal des plantes medicinales. Bauhin in his 

 Pinax published in 1623 does not mention it. 



Prunus Persica var. nucipersica Schneid. f. aganonucipersica, comb. 



nov. — Persica laevis var. a De Candolle, Fl. Frane. iv. 487 (1805). — 

 Seringe in De Candolle, Prodr. n. 531 (1825). — Persica violacea Risso, 

 Hist. Nat. II. 119 (1826). — Gallesio, Pom. Ital. pi. (1839). — Roemer 

 Syn. Monog. in. 26 (1847). — Amygdalus persica b. nucipersica £ Agano- 

 nucipersica Schlibler & Martens, Fl. Wiirtemb. 305 (1834). 



This group comprises the freestones of the Nectarine. As in the 

 true Peaches 1 it is uncertain in this variety whether the freestone or the 

 clingstone form represents the type of P. Persica var. nucipersica (L.) 

 Schneid. and therefore both forms should receive a distinct name. 1 



Prunus Persica var. nucipersica f. scleronucipersica, comb. nov. 



Persica laevis var. a De Candolle, FL Fra;ic, iv. 487 (1805). — Seringe 

 in De Candolle, Prodr. n. 531 (1825). — Persica levis Risso, Hist. Nat. 

 ii. 119 (1826). — Roemer, Syn. Monog. in. 27 (1847) . — Amygdalus 



■ 



1 The True Peaches have been divided into the following two forms: 



Prunus Persica f. aganopersica Voss in Puttlitz & Meyer, Landlex. vi. 345 (1914). — 

 Persica domestica Risso, Hist. Nat, n. 104 (1826).— Roemer, Syn. Monog. in. 23 

 (1847). — Amygdalus Persica a. Aganopersica Reichenbach, Fl. Germ. Exc. 647 (1832). 

 —Schubler & Martens, Fl. Wiirtemb. 304 (1834).— Persica vulgaris a. tomentosa dia- 

 pyrena Moris, Fl. Sard. II. 6 (1840).— Persica vulgaris a. aganopersica Koch, Hort. 

 Dend. 140 (1853).— Persica vulgaris 2b isolata Kuntze, Taschenfl. Leipzig, 273 (1867). 



This group comprises the Peaches known as 'Freestones" in which the flesh is 

 easily separable from the stone. As it is not clear which of the two groups of Peaches, 

 the Clingstones or the Freestones, is the type of Linnaeus' Amygdalus Persica, it has 

 been necessary in order to distinguish them by definite botanical names to give a 

 name to each of these groups. The oldest varietal name seems to be "Aganopersica" 

 which is credited by Voss to Reichenbach, but Schubler & Martens cite Dierbach. 

 As the work of Schubler & Martens was published in 1834, Dierbach's name must 

 have been published earlier, possibly in his " Systematische Uebersicht der urn Heidel- 

 berg wildwachsenden . . . Gewachse" published in 1827, which I have not seen; in 

 Dierbach's Grundriss der okon.-techn. Botanik of 1836 the name appears (p. 160) 

 as group "Aganopersicae" of Persica vulgaris. 



Prunus Persica f. scleropersica Voss in Putlitz & Meyer, Landlex. vi. 345 (1914). — 

 Persica vulgaris Risso, Hist. Nat. II. 94 (1826), Miller pro parte.— Roemer Syn. Monog. 

 in 23 (1847).— Persica vulgaris var. fl. De Candolle, Fl. Franc;, iv. 487 (1805).— Se- 

 ringe in De Candolle, Prodr. II. 531 (1825).— Amygdalus Persica b. Scleropersica s. 

 Duracina Reichenbach, Fl. Germ. Exc. 647 (1832).— Amygdalus persica n. Duracina 

 Dierb. apud Schubler & Martens, Fl. Wiirtemb. 305 (1834).— Persica vulgaris a to- 

 mentosa** sympyrena Moris, Fl. Sard. II. 7 (1840).— Persica vulgaris TQ. Scleropersica 

 s. duracina K. Koch, Hort. Dendr. 140 (1853). 



This group comprises the Peaches known as " Clingstones in which the flesh firmly 

 aheres to the stone. The name "scleropersica" like that of "aganopersica" seems to- 

 have originated with Dierbach; see remarks under the preceding form. 



