PHILADELPHUS 



PHILADELPHIA. Page 2581. 



Add to P. inodorus: P. gloridsus, Beadle, is probably 

 not specifically distinct from P. inodorus; it differs 

 chiefly in the cup of the calyx being abruptly contracted 

 at the base, not gradually narrowed into the pedicel. 



PINANGA. Page 2626. 



dec6ra, Lind. & Rod. Unarmed: trunk tall: sheaths, 

 margin of petioles and nerves at first brown; If.-segms 

 tessile, broadly lanceolate, long-acuminate or some- 

 times with the apex bifid and rotundate. Borneo. 



patula, Blume. Trunk tall: Ivs. unequally pinnati- 

 sect, 1-1 y> ft. long, 9-14 in. broad; segms. falcate- 

 lanceolate, acuminate, the uppermost with their apex 

 truncate-dentate, and their base equally or unequally 

 attenuate: spadix erect or pendulous, 2-3-fid: fr. 

 ellipsoid, acute, obscurely striate. Sumatra. Said to 

 be a dwarf species as grown in pots and useful for con- 

 servatory. This and the above are recently listed. 



PINUS. Page 2640. 



After P. sylvestris var. pumila add: Var. Watereri, 

 Hort. (P. Wateriana, Hort.). Dense columnar form 

 with steel-blue short Ivs. 



POTENTILLA. Page 2773. 



Add to P. fruticosa: Var. parvifdlia, Wolf (P. parvi- 

 folia, Fisch.). Lfts. usually 7, oblong-elliptic, glabres- 

 cent, J^-i^in. long: fls. pale yellow, %-l in. across. 

 Cent. Asia, W. China, Himalayas. It may here be 

 remarked that var. Veitchii, Bean, can scarcely be con- 

 sidered a hybrid of typical P. fruticosa and var. dahurica 

 as formerly supposed, for it is now reported as common 

 in Cent, and W. China, where var. dahurica has not 

 yet been found; it was intro. in 1902, while var. Fried- 

 richsenii, Rehd. (P. Friedrichsenii, Spaeth) was raised 

 about 1895 in Spaeth's nursery from seed of var. 

 dahurica; it differs from var. Veitchii in the yellowish 

 fls. with narrower outer sepals, narrower and larger 

 Ifts. and pale, not lustrous brown stipules. 



PTYCHORAPHIS. Page 2856. 



singaporensis, Becc. (Drymophlaeus singaporensis, 

 Hook. Ptychosperma singaporensis, Becc.). Trunk low, 

 about 4J^ ft. high: Ivs. about 5 ft. long, pinnately pec- 

 tinate, segms. narrowly lanceolate, acuminate, about 8 

 in. long: spadices about 1 ft. long, simply branched 

 from the base. Singapore. 



RHODODENDRON. Pages 2938, 2942. 



4. R. arbutifolium. Two species or hybrids are 

 involved here. The synonyms R. ole&folium and R. 

 Wilsonii should be eliminated. R. arbutifolium is 

 probably a hybrid of R. ferrugineum and R. carolin- 

 ianum. The Ivs. are elliptic, not "to elliptic-lanceolate," 

 and the size is 1H-2J^ in. After R. arbutifolium. insert: 



laetevirens, Rehd. (R. Wilsonii, Hort., not Xutt. 

 R. Wilsonianum, Hort. R. oleifolium, Hort., not 

 Franch.). Probably a hybrid of R. ferrugineum and 

 R. minus. Very similar to R. arbutifolium, but of 

 slenderer, looser habit, with narrower and longer ellip- 

 tic-lanceolate Ivs. of a brighter green. This plant is 

 generally cult, under the name R. Wilsonii, while the 

 preceding one is known in English gardens as R. 

 arbutifolium. 



austrinum, Rehd. (Azalea austrina, Small). (After 

 R. calendulaceum, Xo. 35.) Shrub, to 10 ft.: branch- 

 lets pubescent and usually glandular: Ivs. oval or 

 obovate to oblong-spatulate, acute or mucronulate, 

 finely pubescent, ciliate, 1-3 H in- long: fls. before the 

 Ivs., yellow or orange; cahyx-lobes deltoid or triangular- 

 lanceolate: corolla funnelform, about 1 in. long, the 

 tube scarcely dilated up to the limb : lobes broad, acute : 

 caps, finely glandular-pubescent. Fla. 



226 



SALIX 



3571 



RISES. Page 2963. 



In the Suppl. List under R. Culverwettii, strike out 

 var. wollense which has turned out to be nothing but 

 R. divaricatum (see Kew Bull. 1914:382). 



SALIX. Pages 3052. 



To Xo. 6, after var. decipiens, W. D. Koch (S. ded- 

 piens, Hoffm.) add: Var. bullata, Spaeth (S. builata, 

 Hort.). Forms a compact subglobose bush. 



Between Xos. 6 and 7 insert: 



riibens, Schrank (S. dlbaxS.frdgilis. S. Russettidna, 

 Smith. S. viridis, Fries). Intermediate between the 

 parents. Tree; branchlets less fragile at the base than 

 S. fragilis: Ivs. silky when young, glabrous at maturity, 

 intermediate in size: stalk of caps, longer than hi S. 

 alba. Occurs frequently between the parents. Var. 

 palustris, Schneid. (S. palustris, Hort.). Silky pubes- 

 cence of Ivs. persisting. 



To Xo. 7, add the following variety: Var. calva, 

 G. F. W. Mey. (S. alba var. carrulea, Smith). Of 

 pyramidal habit: Ivs. larger, at maturity glabrescent, 

 more bluish green above and more glaucous below. 



After Xo. 7 insert: 



hexandra, Ehrh. (S. alba x S. pentdndrd). Low tree; 

 mature branchlets glabrous: Ivs. lanceolate, green on 

 both sides, silky at first, becoming glabrous: catkins 

 like those of S. alba; stamens 4-6. In Eu., with the 

 parents. 



After Salix No. 17 insert several species and hybrids, 

 as follows: 



latifdlia,Forbes (S. Cdprea x S. myrsinifdlid). Shrub: 

 branchlets pubescent: Ivs. oval or obovate to oblong, 

 usually acute, irregularly serrate, dark green and 

 finally glabrous above, glaucescent and silky below at 

 first, finally glabrescent: ovary thinly silky or partly 

 glabrous. Occurs with the parents. 



Erdingeri, Kerner (S. Cdprea x S. daphnoides). 

 Tall, arborescent shrub: young branchlets short-pubes- 

 cent, older branches glabrous: Ivs. obovate-oblong to 

 oblong, acuminate, usually narrowed at base, entire or 

 slightly serrate, pubescent while young, nearly gla- 

 brous at maturity: ovary usually glabrous or thinly 

 silky. Occurs with the parents. Var. cremensis, 

 Rehd. (S. cremensis, Kerner). Closer to S. Caprea: 

 Ivs. broader, more densely pubescent beneath: ovary 

 silky. 



Wimmeriana, Gren. & Godr. (S. Cdprea x S. pur- 

 pur -ea). Shrub with upright branches: young branch- 

 lets sparingly short-pubescent, later glabrous, brown: 

 Ivs. oblong or obovate-lanceolate to lanceolate, acute, 

 narrowed at the base, irregularly serrate, thinly silky- 

 pubescent while young, later glabrous, dark green and 

 lustrous above, glaucescent below: stamens connate 

 at base; ovary grayish pubescent. Occurs with the 

 parents. 



cinerea, Linn. Large shrub or small tree, to 25 ft.: 

 1- and 2-year-old branchlets tpmentose: stipules often 

 persistent: Ivs. obovate or elliptic, acute or rounded, 

 narrowed or rounded at the base, irregularly serrate, 

 pubescent on both sides, 1^-2^2 in- long: catkins 

 sessile, before the Ivs.; stamina te ovoid; filaments 

 pilose, free; pistillate cylindric; ovary pubescent; style 

 very short or wanting. April. Eu., N. Afr., W. and N. 

 Asia. Var. oleifdlia, Reichb. (var. angustifblia, Doll). 

 Lvs. elliptic-lanceolate. 



Laestadiana, Hartm. (S. cinerea x S. lapponum. S. 

 canescens, Fries). Low or medium-sized shrub: young 

 branchlets pubescent, older glabrous: Ivs. obovate to 

 oblong, acute or short-acuminate, narrowed at the base, 

 irregularly serrate or entire, pubescent above, tomen- 

 tose beneath: fls. before the Ivs.; stamens sparingly 

 hairy at the base; ovary pubescent; style to one-third 

 as long as ovary. X. Eu. with the parents. 



