Primulaceae ; Plumbaginaceae 



723 



1. Androsace umbellata (Lour.) Merr. Drosera um- 

 bcllata Lour.; A. saxijragaefoUa Bunge; A. patens Wright ex 



A. Gray Ryukyu-kozakura. Annual or biennial, with 



short spreading pubescence; leaves radical, 10-30, spreading, 

 subrounded or sometimes ovate-rounded, 5-15 mm. in diame- 

 ter, flat, deltoid-toothed, truncate and abrupdy petiolate, the 

 petioles 1-2 cm. long; scapes 1-25, 5-10 cm. long, the bracts 

 ovate to lanceolate, 4-7 mm. long, the pedicels 4-10, spread- 

 ing, slender, 2-3.5 cm. long; calyx accrescent after anthesis, 

 spreading, 5-parted nearly to the base, the lobes green, ovate, 

 2-3 mm. long in anthesis, 4-5 mm. long in fruit, acute; corolla 

 white, 4-5 mm. across, 5-lobed; capsules ovoid-globose, about 

 4 mm. in diameter, 5-valved, the valves white, membranous. 



Mar.-Apr. Lowlands; Honshu (Chugoku Distr.), Shi- 



koku, Kyushu. Korea, Formosa, and se. Asia. 



2. Androsace lehmanniana Spreng. A. villosa var. lati- 

 jolia Ledeb.; A. chamaejasme var. capitata R. Knuth, and var. 



arctica R. Knuth; A. chamaejasme var. paramushirensis Kudo; 



A. chamaejasme subsp. lehmanniana (Spreng.) Hult. To- 



cHiNAi-s6, Chishima-kozakura. Small perennial, loosely 

 white-pubescent; stems short, slender, much-branched, with 

 several dense whorls of leaves near top; leaves thick, pale yel- 

 low-green, broadly oblanccolate to narrowly obovate, 5-12 mm. 

 long, 2-5 mm. wide, very obtuse, narrowed to a short petiole- 

 like base, entire, loosely long-pubescent, without a distinct 

 midrib; scapes 3-4 cm. long, white-pubescent; flowers 2-4, 

 umbellate, white, 5-6 mm. across, the bracts narrowly oblong, 

 obtuse, 2-3(-4) mm. long, the pedicels 3-5 mm. long, slightly 

 glandular; calyx cup-shaped, 5-lobed on upper half, the lobes 

 ovate, obtuse, erect; corolla salverform, with a yellow center, 

 the limb spreading, the lobes broadly elliptic; capsules en- 

 veloped by the calyx. July. Alpine; Hokkaido, Honshu 



(Mount Hayachine in Rikuchu) ; rare. Kuriles, Sakhalin, 



and n. Korea to Alaska, n. China, Siberia, and Turkestan. 



8. STIMPSONIA C. Wright ex A. Gray Hozakizakura Zoku 



Glandular-pilose small annual with erect or ascending, rather simple leafy stems; leaves alternate; inflorescence a loose terminal 

 raceme; flowers small, solitary in axils of bractlike leaves; calyx 5-parted, the lobes linear-oblong, spreading in fruit; corolla 

 hypocrateriform, the tube slighdy longer than the cal>'x, not constricted, hairy on the throat, the lobes 5, imbricate in bud; stamens 

 5, on the tube, the filaments short-filiform, the anthers not exserted, obtuse; ovary globose; ovules many, semi-anatropous; cap- 

 sules globose, 5-valved to the base; seeds small, many. One species in e. Asia. 



1. Stimpsonia chamaedryoides C. Wright. Primula 



veronicoides Petitm. Hozakizakura. Plant 3-12 cm. high, 



with multicellular spreading glandular hairs; stems simple, 

 erect; radical and lower few cauline leaves elliptic to broadly 

 ovate, 1-2 cm. long, 7-12 mm. wide, rounded at base, obtusely 

 toothed, the pedoles about as long or shorter than the blades; 



upper leaves sessile, ovate-orbicular, almost duplicate-toothed, 

 the upper bracteal leaves lanceolate, 2-5 mm. long, entire; 

 flowers 2-10, 4-5 mm. across, white, short-pedicellate; calyx 

 2-3 mm. long; corolla-tube about 2.5 mm. long, about as 



long as the lobes; capsules about 2.5 mm. across. Apr. 



Kyushu (Yakushima) ; rare. Ryukyus, Formosa, and China. 



9. SAMOLUS L. Hai-hama-bossu Zoku 



Glabrous herbs, rarely suflrutescent; leaves radical and cauhne, alternate, linear to obovate, entire; flowers small, white, in 

 terminal racemes or corymbs, the pedicels often bracteate near the middle; calyx-tube adnate to the lower part of ovary, the limb 

 persistent, 5-lobed; corolla subcampanulate, with a short tube, the Hmb 5-lobed; stamens 5, inserted on the tube, alternate with 

 the staminodes, the filaments short, the anthers obtuse to acuminate; ovary globose, the style short; ovules many, semi-anatropous; 

 capsules ovoid-globose, 5-valved; seeds minute. About 10 species, chiefly in the S. Hemisphere, few in the N. Hemisphere. 



1. Samolus parviflorus Raf. 5. floribundus H. B. K.; S. 

 valerandi var. floribundus (H. B. K.) Reichenb.; S. valerandi 



sensu auct. Japon., non L. Hai-hama-bossu. Glabrous 



perennial 10-30 cm. high, ascending to decumbent, with slen- 

 der short rhizomes; radical leaves obovate or broadly elliptic, 

 2-6 cm. long, 1-2 cm. wide, entire, rounded to very obtuse, 

 gradually narrowed to a peUolelike base, minutely brown- 

 spotted, the cauline leaves abrupdy narrowed to a short petiole- 



like base, 1-3 cm. long; racemes often leafy at base, loosely 

 10- to 20-flowered, 4-10 cm. long, the pedicels ascending- 

 spreading, slender, 1-2 cm. long, the bracts minute, near the 

 middle of the pedicel; flowers white, about 1.5 mm. across; 

 calyx accrescent after anthesis, the teeth deltoid, minute; cap- 

 sules globose, about 2.5 mm. across.— — June-Aug. Hokkaido, 

 Honshu. N. America. 



Fam. 162. PLUMBAGINACEAE Isomatsu Ka Leadwort Family 



Herbs or shrubs, sometimes scrambling or scandent, exstipulate; flowers bisexual, actinomorphic, often in one-sided racemes 

 or umbels, the bracts often sheathing, scarious; calyx frequently ribbed, often scarious between the lobes; corolla-lobes imbricate, 

 usually small, persistent; stamens 5, opposite the corolla-lobes and more or less inserted on the tube, the anthers 2-locular, 

 longitudinally dehiscent; ovary superior, 1-locular; styles 5, free or connate; ovules solitary, pendulous; fruit a utricle, sometimes 



circumscissile; seeds with or without endosperm; embryo large, erect. About 10 genera, chiefly in die Mediterranean region 



and centr. Asia, a few in N. America. 



1. LIMONIUM Mill. 



Iso-MATsu Zoku 



Perennials or rarely annuals, acaulescent or with short, thick, branched stems; leaves rosulate, dense, alternate, flat, entire or 

 pinnately divided; scapes or peduncles often branched; inflorescence a cyme, corymb, or panicle, the bracts scalelike, with a 

 bonelike midrib and broad scarious margins; calyx usually infundibuliform or tubular, 5- or 10-ribbed, scarious, plicate at base; 



