'SEUDOTSUUA 



cones smaller. ^ 

 cently iutrodui 

 hardy iis tli.- li 

 MayrlP. !>.-- 



80 ft., IM" 





and broader and 



■uid flat- 

 ar, pyra- 

 ly differ- 



;en. None of the 3 or 4 



ntion in this country, 



l.v north of the middle 



h.is been successfully 



.irn about 1 in. long, 



- ..lithe upper ones: 



. iiMs). R.H. 1866:451. 



. i.y grafting on Abies 



1 on Pseudotsuga. 



Alfred Kehdeb. 



The Douglas Spruce is a tree for the million. It 

 would be difficult to overrate its beauty. As a forest 

 tree it perhaps produces a greater crop of lumber per acre 

 than any other species. It probably grows fasterthan any 

 other conifer. Indeed, the complaint is sometimes 

 made that it grows too fast to make a compact lawn 

 tree. It Is desirable to have groups of Douglas Spruce, 

 because the foliage is so soft that single specimens are 

 sometimes injured by high winds. Specimens planted 

 on the prairies without jirotei-tinn from hot winds may 

 sometimes h:u-e their hiuls iiijurifl by kite spring frosts. 

 It is, of course, :i iniviak,. i.. iiv,- tile I). .uf,'his" Spruce 

 for a wind-lireak. rin- l)..ii:ihis Spniei- is i;enerally 

 prop, by seeds. ,s,,.,l,s <,( e,,iiilers f^atli.red on the 

 Pacific slope are teii.ler, wliiletliose gatliereU ill Colorado 

 produce hardy trees which endure both drought and 

 cold. Unlike the tirs, the Douglas Spruce has fine, fibrous 

 roots like the Norway Spruce and transplants as readily. 

 The writer has transplanted many stocky young trees 

 growing in the open to the nursery and has saved 90 per 

 cent of them. They seemed to thrive as well as nur- 

 sery-grown Norway spruces of the same size. The 

 yield of seed from a wagon-load of cones is light, and it 

 is somewhat ilillicult to grow seedlings. In some cir- 

 cumstances it ^vilI be cheaper in the end to procure 

 5'oung trees. The Douglas Spruce is remarkable for its 

 wide variation in form and color. The needles may be 

 short or long, light green, dark green, or have a bluish 

 or silvery cast. The deep blue and silvery foliage is 

 characteristic of the deep gorges of high altitudes. 

 C. S. Hakbison. 



We Ii:ive fn.iTid the Douglas Spruce one of the easiest 



of all r..w from seed. However, the seed 



rajMill ' I riiiinating powders, in this respect 



purt.tl.,,. ! I, :.; more than of the spruces. As it is 

 now I.. Hi- ;;l'.\mi and disseminated, it is not to be 

 recoiinii.iiiled for general planting. Seed from trees 

 growing in the valleys and foothills of Colorado will not 

 produce trees that are hardy north of the Ohio river. 

 As trees growing in those localities are easy of access, a 

 larger part of the seed is collected from them. There is 

 considerable difference between trees grown from valley 

 and mountain seeds. The former have short green 

 leaves and a stunted look, compact growth, showing 

 none of the bold and striking effect of those from a 

 high elevation. The latter have longer leaves, more 

 glaucous appearance and great rapidity of growth. The 

 valley trees brown in winter; the mountain trees do 

 not. Many of the latter have a spreading and weeping 

 habit, partaking more of the characteristic of the hem- 

 lock. The valley trees have more of the habit of Picea 

 orientalis, but not as good color. Unless more care is 

 taken in collecting seeds of this tree, it will soon fall 

 into disrepute. xhos. H. Douglas. 



PSIDIUM 



PSlDIUM ((ireek, psidioii, the pomegranate), ^f:|,- 

 1,'ir. .1 . All. .Ill l.iO species of evergreen trees and shrubs. 

 I,\~. ..|i|ii.site, 1. etiolate, penniveined: fls. rather large, 

 Willi. . .wn..-. on axillary or lateral, 1-3- (rarely many-) 

 till, peiliincles; calyx 4-5-lobed, the lobes persistent; 

 petals 4 or .'J, spreading: berries globose, ovoid or jiear- 

 shaped, usually roughish, often crowned with the calyx 

 limb; seeds subreniform, hard. Natives of tropical and 

 subtropical America; some species have become natur- 



alized in tropical Asia and south Africa 

 suckers, cuttings or seeds. 



Pro] 



ily by 



Araca, 2. 

 Oattleianum, 

 Guajava, 1. 



INDEX 



. L. refers to supplementary list.) 



e, 3. pyriforme, : 



lueidum, 

 polycarpum, 

 povniferum, 1, 

 pyriferum, 1. 



sapidissimum, 1 

 Sinense, s . L. 

 Thea, s. L. 



A. BranchUts 4-angUd. 

 Guajiva, Linn. (P.pon 



P. Gi, 



Raddi). Lemon Guava. Fig. 2008. Shrub or small tree, 

 (>-15 ft. high: Ivs. oval to oblong-lanceolate, bluntish, 

 chartaceous, glabrous above, puberulent below: pe- 

 duncles 3 to many-fid., pubescent: fr. globose, yellow, 

 aromatic, somewhat astringent. June. Grown in S. 

 Calif, and valued for jellies and preserves: several 

 horticultural varieties are offered by nurserymen. 

 Var. sapidiBsimum, Jacq., has similar fruit but only 

 1-fld. peduncles. Becomes a troublesome weedy plant 

 in moist tropical countries. 



Var. pyriferum, Linn. (P. pyriferum, Linn. P. pi/- 

 rifdrme, Griseh.). Common Guava. Small tree: Ivs. 

 acute: peduncles 1-fld.: fr. small, pear-shaped, smooth- 

 skinned, yellowish when ripe, aromatic, sweet and 

 pleasant to the taste. Fls. May-July: fr. July-Nov. 

 B.R. 13:1079.— The source of the well-known Guava 

 jelly of the West Indies. The fresh fruit makes ex- 

 cellent tarts after removing the small stony seeds. To 

 be eaten raw, it is best gathered in the early morning, 

 according to Lindley, as it is then more agreeably acid. 

 AA. Branchlets terete. 



2. Ar4ca, Raddi. Brazil Guava. Shrub 4-G ft. high: 

 branchlets hirsute: Ivs. oval or oblong, obtuse, above 

 sub-velutinous to the touch, beneath pubescently sub- 

 hirsute; veins reticulate, somewhat raised: peduncles 

 axillary, 1-3-fld. : fr. ovoid, greenish yellow; flesh 

 white. Dry uplands of Brazil. -Offered by two or three 

 dealers, and said to be one of the very best Guavas. 



3. Guine6nse, Swartz. Guiana Guava. Shrub 8-10 ft. 

 high: branchlets pubescent-villous: Ivs. ovate, glabrous 

 above: petioles and under side rusty-tomentose : pe- 

 duncles 1-3-fld. : fr. subrotund, subpubescent, deep 

 yellow outside; flesh red, said to possess an exquisite 

 flavor. 



4. Cattleiinum, Sabine. Strawberry Guava. Shrnl) 

 or small tree, 10-20 ft. high: branchlets glabrous: Ivs. 

 opposite, obovate, coriaceous, glabrous, dark green: pe- 

 duncles axillary, opposite, solitary, l-ll.l.. s.'ar.ely ei|iial- 

 ing the petioles: fr. nearly spherical. .1I...111 I in. L.iig, of 

 a fine deep claret color, with atoii;;li |..\ . ..I.iie -^l.iii, re- 

 .sembling thatof aripe flg, but thinnir: |.iil|. il.'^hy, soft 

 and juicy, purplish red next the skin but white at center, 

 sweet and acid, with a strawberry-like fragrance and fla- 

 vor, hence the popular name. May. Brazil. B.R.622.B.M. 

 2501. N. 3:238. -Extensively cultivated in S. Calif.; 

 hardy outdoors near San Francisco and probably north- 

 ward. Var. Idcidum ( /'. Iiiciilum, Hort.). YELLO^^ 

 Strawberry Gi-ava. Has a larger yellow fruit, said to 

 have abetter taste than the purple-fruited form. Re- 

 ported as being cultivated extensively in Florida; grown 

 in S. Calif, by Franceschi. 



P. GuaymlUas. Hort. "Brazil; a distinct-looking species, 

 said to have smaller fruit than P. Guajava but of superior 

 taste,"= P. Cujavillas] Burm. (?), which has been reduced to a 

 form of P. Guiijav.i.— P. poliicdrpum, L.imb. Small shrub with 



ath: pedui: 



I rarely larger than a cherry. S. . 

 iisr, recently introduced by Mr 

 r for the U. S. Dept. of Agricultii 



s3-Hd.; 



