HOYA 



HULSEA 



1613 



G.C. II. 17:741. A handsome species, requiring the 

 general treatment given to H . carnosa. 



australis, R. Br. Twiner, glabrous and succulent, 

 apparently sometimes epiphytic : Ivs. ovate, obovate to 

 nearly orbicular, obtuse or short-acuminate, thick and 

 fleshy: fls. white tinged pink, in simple umbels on ped- 

 uncles that seldom surpass the petioles; corolla spread- 

 ing; Hin. or less in diam., broadly 5-lobed; crown cup- 

 shaped and expanding into horizontal concave promi- 

 nently 2-keeled parts. Austral. 



multiflora, Blume (H. coridcea, Lindl., not Blume. 

 Cyrloceras mulliflorum, Heynh. C. floribundum, 

 Maund. Centrostemma multiflorum, Decne. C. Lind- 

 leyanum, Decne.). Stout and glabrous, climbing: Ivs. 

 linear-oblong, acute at both ends, the petiole short: fls. 

 straw-yellow (corolla white tipped with buff), in many- 

 fld. terminal and axillary umbels on peduncles 1-2 in. 

 long; corolla-lobes %in. or less long; corolla-tube 

 bearded at base; segms. of crown entire on inner angles. 

 Malacca, etc. B.R. 25:18. B.M. 5173. 



imperialis, Lindl. Lofty climber, with puberulent 

 sts. 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 segms. triangular-acute: umbels droop- 

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

 B.M. 4397. F.S. 4:393, 394. R.H. 1900:576. J.H. 

 III. 55:443. G. 7:607. 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. 



bella, Hook. (H. Pdxtoni, 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-segms. boat-shaped and violet: umbels few- 

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

 J.H. III. 35:5. Gn.W. 4:793; 22. suppl. July 1. 

 Handsome little species; scarcely climbing. 



H. campanuldta, BIume=Physostelma. H. fraterna, Blume. 

 Climbing, rooting near insertion of petioles: Ivs. 6-12 in. long, very- 

 thick, elliptic, glossy above and pale beneath: fls. brownish red, 

 in dense umbels; corolla rotate, pale buff with 5 red-brown blotches: 

 lobes of crown round-ovate, concave with blood-red spot at base. 

 Java. B.M. 4684. J.F. 4:385. #. fusco-marginata, N. E. Br. 

 Lvs. fleshy, ovate-lanceolate, 7-9 in. long, tawny on margins: fls. 

 ochre-yellow to yellowish green, in many-fld. umbels on peduncles 

 2 in. or less long. Country unknown. H. ovalifdlia, Wight & 

 Arn. Slender, glabrous: Ivs. more or less clustered, variable, being 

 elliptic to ovate or lanceolate: fls. bright yellow with red corona, 

 in large umbels. India. J.F. 1:64. H. pdllida, Lindl.=^/. para- 

 sitica. Wall. (H. pallida, Lindl.). Tall climber: Ivs. fleshy, variable, 

 ovate-elliptic to lanceolate: fls. pale yellow or straw-color, the 

 corona pinkish. India. B.R. 951. J.F. l,p. 64. H. purpiireo-fusca, 

 Hook. Twining, glabrous: Ivs. ovate and acute: fls. purplish brown, 

 in dense umbels; corolla rotate, pubescent above; crown-lobes ovate, 

 nearly plane above. B.M. 4520. J.F. 1:30. T TT "R 



HUCKLEBERRY: Vaccinium and Blueberry; also Gaylussatia. 



HUDSONIA (for William Hudson, 1730-1793, an 

 English botanist). Cistaceas. BEACH HEATHER. Three 

 little heath-like shrubs of eastern North America, suita- 

 ble for colonizing in dry places and along the seashore: 

 low and diffusely branched, with narrow or scale-like 

 or awl-like often closely pressed Ivs.: fls. many and 

 small, yellow, crowded on the upper parts of the 

 branches; petals 5, obovate-oblong, exceeding the 

 calyx; stamens many: fr. a 3-valved caps, included in 

 the calyx. Allied to Helianthemum, but differing 

 chiefly in the 2-ovuled cells of the ovary and in the 

 scale-like or subulate imbricate Ivs. H. tomentosa, 

 Nutt., on shores and dunes, and in pine-lands, New 

 Bruns. to N. C. and far westward: Ivs. oval to narrow- 

 oblong, closely imbricated: fls. nearly or quite sessile: 

 densely tufted, hoary, 4-8 in. high. May-July. H. 

 ericobdes, Linn., in sands and pine-lands near the 

 coast, Newfoundland to N. C.: greenish, although 



downy: Ivs. subulate and spreading: fls. on slender 

 pedicels; at least 1 sepal with tooth near apex: 4 to 8 

 in. L.B.C. 2:192. H. montana, Nutt., in mountains 

 of N. C.: bushy and somewhat villous: Ivs. narrow- 

 subulate, somewhat spreading with age: fls. on slender 

 pedicels; at least 1 sepal with linear-subulate lobe: 

 tufted, the branches 4-6 in. long. They are hardy N. 

 and handsome when covered with their bright yellow 

 numerous fls., but very rarely cult., as they are difficult 

 to grow and short-lived. The first species is a seashore 

 plant and demands very sandy moderately moist soil; 

 the second grows in dry sandy soil. Prop, by seeds and 

 probably by cuttings. ALFRED REHDER. 



L. H. B. 



HUERNIA (Justus Huernius, or Heurnius, collector 

 of Cape plants). Also spelled Heurnia. Asdepiadacese. 

 Succulent dwarf perennials resembling Stapelia, but 

 differing in having the angles between the corolla-lobes 

 produced into teeth, the corolla campanulate, the 

 corona toothed or lobed and adnate to base of corolla. 

 They are greenhouse subjects, mostly from the Cape, 



1922. Hulsea nana. ( X 1 A) 



but some from Trop. Afr. and one from Arabia. They 

 appear not to be in the trade, but some of the 30 or 

 more species may be found in collections of succulents. 



HUERNIOPSIS (Huernia-like). Also spelled Heur- 

 niopsis. Asclepiadacese. One species, H. decipiens, N. E. 

 Br., in,S. W. Trop. Afr., differing from Huernia in 

 having no outer corona and in other characters. It is 

 a small succulent with decumbent more or less clavate 

 obtusely 4-angled toothed sts. 1-3 in. long: fls. 2-3 

 together at the middle or toward the top of the st., 

 1 in. diam. when expanded, outside pale yellow-green, 

 spotted and streaked purple, inside brown-red spotted 

 yellow, fetid at night. 



HULSEA (Dr. G. W. Hulse, of Louisiana, who col- 

 lected in California). Composite. Perennial, biennial 

 or annual herbs native of California, Nevada and north. 



Glandular pubescent or woolly herbs: 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. Eleven 

 species. This includes one of many woolly herbs offered 

 by Californian collectors. It grows a few inches high 

 and bears fls. with yellow rays. Treated best as a 

 partial alpine. 



