HOWEA 



HUMATA 



779 



placed being niodfiatrlv ^iKiilftl. Tii three to four 

 months the yoiuis phnii:^ sh..ulil be rea.iy f..r shifting 

 into 3-ineli jiots if properly (-[ii-eil t'uv; from tliis time 

 forward they do not require a higher night temperature 

 than 60°. The Howeas are not very particular in regard 

 to soil, a rich, light loam answering very well for them, 

 but a very stiff soil may be improved by the addition of 

 one-fourth part of jieat, and in all oases a reasonable 

 proportion of fertilizers may be used to advantage. 

 Scale insects are the most troulilesonK- the grower has 

 to contend with, and should be removed as rapidly as 

 possible, else the foliage will be permanently disfigured. 

 Of the two species referred to, ff. Belmoreana is per- 

 haps the greater favorite, being more compact ingrowth 

 and extremely gr.aceful in foliage, a plant of this spe- 

 cies of a given age usually carrying a greater number 

 of leaves than one of II. Forsterkina of the same age, 

 and the leaves having more leaflets than those of the 

 latter species. The seeds of the two species are very 

 similar in appearance, though those of H. Belmoreana 

 frequently average a larger size, and while those of the 

 last named species require about three years to mature 

 on the tree, the seeds of B. Forsteriana ripen in about 

 twelve months. For house culture by amateurs, see 

 Piilms. -W. H. Taplin. 



HOYA (Thomas Hoy was once gardener to the 

 Duke of Nortlimiil)erlandl. Asrlepin.!i)cew. More 

 than 50 tropieal Asian and .\ustralian climbing or 

 trailing evergi-ein sluubs. bearing;- iliiek, opposite 

 lvs.,and odd.<dten showy Hs. in umbel-like clusters. 

 Corolla rotate, .5-lobed, thick and more or less waxy 

 in appearance : crown of 5 thick and depressed 

 fleshy appendages: pollen-masses 10, short, fixed by 

 their base in pairs to the 5 glands of the stigma; 

 follicles acuminate, smooth: stems twining, or climbing 

 by means of roots. 



Hoyas are summer-blooming plants, of comparatively 

 easy culture. They need an intermediate or warm tem- 

 perature. Let them rest or remain very slow in winter 

 (50° in a dryish place), but start them into growth to- 

 wards spring. In the summer they are sometimes 

 plunged in the border, but better results are to be ex- 

 pected, as a rule, by keepim,^ tliem in pots in the con- 

 servatory. In their growing and blooming season, give 

 plenty of sun and air. They propagate by cuttings of 

 the top growth in spring, and also by layering. The lat- 

 ter method is particularly adaptable to H. carnosa and 

 other species which climb by means of roots. A. P. 

 Meredith advises as follows: "For compost, use fibrous 

 loam, lumpy (or coarse) in two parts, to one of leaf- 

 mold, using charcoal pounded fine, brick dust, or lime 

 rubble if procurable, instead of sand. They are often 

 found doing well in loam and sand. When in growth 

 use weak liquid manure." 



A. Plant distinctly climbing. 



cambBa, R. Br. {H. ilotdskel, Teij-sm.). Wax Plant. 

 Twiner, and attaching itself to support by means of 

 roots ; ordinarily grown as a pot- or tub-plant, and reach- 

 ing 5-8 ft. high, but growing twice and more this height 

 when it has the opportunity: glabrous: Ivs. succulent 

 and shining, ovate-oblong, acute, short-stalked, entire: 

 fls. white with pink center, fragrant, in axillary or inter- 

 petiolar umbels, the crown-segments very convex, and 

 spreading into a horizontal .star. Trop. Asia and Aus- 

 tral. B.ii.l?,%,a.sAsclepias carnosa. A. G. 18: 34. -The 

 common species, and often seen in window-gardens. 

 After the bloom is over (in summer) keep the plant in 

 a cool place in order that it may remain half -dormant. 

 In late winter or spring, start it into growth. Do not cut 

 off the spur which remains after the fls. pass, for this 

 spur bears fls. again. The Wax Plant is easy to manage, 

 and it improves with age. Often trained as a perma- 

 nent cover for a glasshouse wall. In the South, it is 

 nearly everblooming. There is a form (va.T. variegMa) 

 with handsome variegated Ivs. L. 44. 



globuldsa, Hook. f. Hairy: Ivs. elliptic-oblong or long- 

 oblong, acuminate, rounded at the base, the midrib very 

 stout, the petiole an inch or less long: fls. pale straw or 

 cream color, the star-like crown-segments white, with 

 pink at the base, borne in dense, globular umbels: folli- 

 cles a foot or more long. Sikkim. F.M. 1880:406. G.C. 



11.17:741. — A handsome species, requiring the general 

 treatment given to H. carnosa. 



imperiilis, Lindl. Lofty climber, with puberulent 

 stems and foliage: Ivs. elliptic or linear-oblong, obtuse 

 but with a short point: fls. immense (2-3 in. across), 

 leathery, dull purple, somewhat pubescent near the white 

 crown, the segments triangular- acute: umbels drooping 

 on long peduncles: follicles 9 in. long. E. Indies. 



1107, Howea Belmoreana. 

 One of the most popular of all palms. 



B.M.4397. F.S. 4:39.3-4.— A noble Hoya, requiring very 

 rich soil and a rather high temperature. Although 

 naturally a very tall climber, it can be made to flower 

 in pots when 3 or 4 ft. high. 



AA. Plant trailing or nearly erect. 

 b6Ila, Hook. (H. Fdxioni, Hort.). Slender, bushy, 

 1-2 ft. high, pubescent: Ivs. an inch long, ovate-acute, 

 very short-stalked, somewhat recurved : fls. % in. across, 

 pure white, with very short and half-acute lobes, the 

 crown-segments boat-shaped and violet: umbels few- 

 fld. and short-stalked. India. B.M. 4402. F.S. 4:399. 

 J.H. III. 35:5.— Handsome little species ; scarcely climb- 

 ing- L. H. B. 



HUCKLEBERRY. See Vaccinium ; also Guylns- 

 sacia. 



HOLSEA (Dr. G. W. Hulse, of La., who collected in 

 Calif.). Cotnpdsitw. This includes one of many woolly 

 herbs offered by Californian collectors. It grows a few 

 inches high and bears fls. with 20-30 yellow rays. Six 

 species of herbs, perennial, biennial or annual, all Cali- 

 fornian, glandular pubescent or woolly: Ivs. pinnately 

 lobed or toothed: fls. large, solitary, yellow or purple; 

 involucral bracts free, narrow; style branches obtuse: 

 pappus of 4 hyaline, lacerated, chaffy scales. Monogr. 

 by Gray in Bot. Calif. 1:385. 



n^na. Gray. Stems depressed, leafy at summit: Ivs. 

 pinnatifld or incised, petiole long-margined: peduncle 

 1-2 in. long: involucral scales in 2 series: rays 20-30. 



HUMATA (Latin, of the earth ; referring to the creep- 

 ing habit of the rhizomes). Potypoditicetp. A genus of 

 ferns related to Davallia and sometimes included with 



