28 JOURNAL OF THE ARNOLD ARBORETUM (vol. hi 



citations of Linnaeus and Sims and the statement "frequens in hortis 

 culta" to the form in question, but Seringe says "excl. syn. Plukenet" 

 though Plukenet's figure undoubtedly belongs to this form; as to the 

 citation of Ker Seringe's name refers to P. japonica var. Kerii Koehne. 

 Thus it seems that Seringe's name is chiefly based on the plant here 

 called P. glandulosa f. sinensis, but the fact that Seringe published it as 

 a form of Cerasus japonica makes its application doubtful and it therefore 

 seems wise to abandon this name and retain Koehne's names for the 

 two forms. I can not, however, agree with Koehne in referring Cerasus 

 japonica /3 multiplex Seringe, though only "pro parte," to P. glandulosa 

 f. albiplena Koehne; as pointed out, it belongs partly to P. glandulosa f. 

 sinensis and partly to P. japonica var. Kerii. 



The origin and time of introduction of this form is uncertain; it was 

 apparently introduced into cultivation about the middle of the 17th 

 century, for in 1687 Hermann (Hort. Acad. Lugd.-Bot. Cat. 487, 489), 

 states that he found it frequently cultivated in English gardens, and 

 introduced it from there into Belgium; he further states that he had seen 

 it growing luxuriantly at the Cape of Good Hope, but the latter state- 

 ment is apparently an error of memory. He describes it and figures it 

 under the name "Persica malus Africana nana flore incarnato pleno." 

 A better figure is given 13 years later by Plukenet (Phytogr. t. 11, fig. 4) 

 and on the same plate as fig. 4 a good illustration of P. nana Focke under 

 the name " Amygdalus Indica nana" appears, which was frequently cul- 

 tivated in Belgium about 1687 according to Hermann. The " Persica 

 malus Africana nana flore incarnato simplici" mentioned by Hermann 

 without further description is probably the typical form raised from seed 

 of the double form, for in the description of the latter he says " flores . . . 

 aliquando simplici petalorum serie referti." 



Prunus japonica var. Kerii Koehne in Sargent PI. Wilson, i. 267 

 (1912). — Add the following synonyms: Cerasus japonica /3. multiplex 

 Seringe in De Candolle, Prodr. n. 539 (1825), pro parte. — Cerasus 

 japonica var. multiplex G. Don, Gen. Syst. n. 514 (1832). — Cerasus sin- 

 ensis Loudon, Arb. Brit. n. 706, fig. 417 (1838) — Prunus japonica £>. 

 multiplex D. Dietrich, Syn. PI. in. 44 (1843). — Transfer Amygdalus 

 pumila Sims to P. glandulosa f. sinensis. 



This form is apparently not now in cultivation; it was introduced ac- 

 cording to Ker about 1808 by Charles Greville from China to England 

 and about 1815 was growing in the nursery of Lee and Kennedy in Ham- 

 mersmith under the name P. japonica. The drawing of Amygdalus 

 pumila Sims in Botanical Magazine referred by Koehne to this form, 

 but belonging as I am convinced to P. glandulosa f. sinensis, was made 

 from a plant received from the same nursery, where it had been already 

 in cultivation about 1774 according to a specimen in the Banksian Her- 

 barium, as stated by Sims. Loudon states that both forms were still 

 growing in the Hammersmith nursery about 1838. 



