,6— ROSA WATSONIANA Crop. 
/^osa IVafsoniana : caulibus debilibiis, decumbentibus, sursiim pubcscentibus; 
aculeis parvis, sparsis, leviter uncinatis ; foliolis 3-5, linearibus, subintegris, leviter 
pubcscentibus; rhachi pubescente, parce glandulosa et aciculata ; stipulis longc 
adnatis, angustis, apicibus liberis linearibus ; floribus multis, in paniculam laxam 
dispositis ; bracteis linearibus, parvis ; calycis tubo subgloboso, nudo ; lobis lanceo- 
latis, integris ; petalis oblongis, acutis, parvis ; stylis in columnam protrusam 
coalitis ; fructu parvo, subgloboso, nudo ; sepalis caducis. 
R. IVatsoniana Crepin in Bull. Soc. Bot. Belg. vol. xxvii. pt. 2, p. 96 (1888) ; 
in Rev. Hort. Belg. vol. xiv. p. 183, fig. 16 (1888). — Sargent in Garden and Forest, 
vol. iii. p. 477, fig. 59 (1890). — Rehder in Bailey, Cycl. Am. Hort. vol. iv. p. 1550 
(1902). — C. K. Schneider, III. Handbuch Laubholzk. vol. i. p. 541 (1906). 
Stems very slender, weak, trailing, pubescent upwards ; prickles small, scattered, 
slightly hooked. Leaflets 3-5, linear, subentire, i-i^ in. long, often variegated with 
white, pubescent on both surfaces; petioles pubescent, slightly glandular and prickly; 
stipules adnate, with long linear free tips. Flowers many, arranged in a lax terminal 
panicle; pedicels short; bracts small, linear. Calyx-tube subglobose, naked; lobes 
lanceolate, entire, under i in. long. Corolla ^ in. diameter ; petals oblong, acute, small, 
white or rose-red. Styles united in a column protruded beyond the disc. Fruit 
globose, the size of a pea, red, naked ; sepals caducous. 
This veiy curious Rose of unknown origin has never been found 
in a wild state. It is supposed to have been introduced from Japan, 
although it does not appear among the series of Japanese Roses 
figured in part 27 of the PJionzo ZoitfoiL. It was sent by Mr. Edward 
Rand of Dedham, Massachusetts, to the Arnold Arboretum in 1878. 
He had originally found it in a garden at Albany, New York. It has 
been said to be a variety of Rosa imdtiflora Thunb., bearing the same 
relation to the type that Rosa longifolia Willd. bears to Rosa chinensis 
Jacq., but Crepin considers it to be more nearly related to Rosa 
anemonejiora Fortune, another Asiatic species. He named this Rose 
IVatsoniana in compliment to the late Dr. Sereno Watson, Curator of 
the Gray Herbarium at Harvard University. 
Rosa Watsoniana does not make any great effect, but it is so 
interesting that it should be included in any collection of Roses. The 
inflorescence is pyramidal and the individual flowers are not more 
than half an inch in diameter ; the petals, pointed at the apex, are 
53 
