Tiliaceae; Malvaceae 



623 



Nakai MorwA-BODAiju. Less pubescent; leaves green be- 

 neath. This may be only a juvenile form. 



Tilia X noziricola Hisauchi. Nojiri-bodaiju. Hybrid 

 of T. maximowicziana X T. japonica. 



4. Tilia rufovillosa Hatus. ? T. man\ichiana Makino 



TsuKUSHi-BODAiju. Resembles the preceding species; 



young branches densely grayish pubescent; leaves rather thin, 

 oblique, cordate or ovate-cordate, 10-15 cm. long, 8-12 cm. 

 wide, short-acuminate, acutely serrate, loosely stellate-pubes- 

 cent only while young, densely grayish pubescent on nerves 

 beneath, without axillary hairs, the lateral nerves 7-9 pairs, 

 the petioles 3-5 cm. long, densely pubescent only while young; 

 inflorescence 5- to 9-flowered, loosely stellate-pilose; sepals 4-5 

 mm. long, densely stellate-pilose; petals oblong-oblanceolate, 

 about 8 mm. long; staminodes spathulate, about 7 mm. long; 

 fruit subglobose, 6-8 mm. in diameter, obscurely 5-ribbed, 

 with long dense reddish brown simple hairs and short grayish 

 stellate hairs. July. Honshu (Jakuchisan in Suwo), Kyu- 

 shu (mountains of n. distr.). 



5. Tilia japonica (Miq.) Simonk. T. cordata var. ja- 

 ponica Miq.; T. tilmi folia var. japonica (Miq.) Sarg. ex Mayr. 

 Shina-no-ki. Branchlcts glabrous; leaves oblique, cor- 

 date-orbicular, rarely broadly ovate-orbicular, 5-8(-10) cm. 

 long and as wide, abruptly acuminate, obliquely cordate or 

 rounded on one side at the base, rather irregularly and acutely 

 serrate, glabrous on upper side, glabrescent and with pale 

 brown axillary tufts of hairs beneath, the lateral nerves 4-6 

 pairs, the tertiary nerves very slender, the petioles 3-5 cm. 

 long, rather slender; sepals 3^ mm. long, densely appressed- 

 puberulent outside, sparsely so inside; petals broadly oblanceo- 

 late, about 5 mm. long; stamens as long as the petals; stami- 

 nodes shorter than the petals; fruit subglobose, about 5 mm. 



long, densely grayish brown puberulous. July-Aug. 



Mountains; Hokkaido, Honshu, Shikoku, Kyushu. 



Var. leiocarpa Nakai. Kenashi-shina-no-ki. Fruit gla- 

 brous. Shikoku. 



Fam. 133. MALVACEAE Aoi Ka Mallow Family 



Herbs or woody plants usually with stellate hairs; leaves stipulate, alternate, simple, palmately or rarely pinnately nerved, 

 often palmately lobed; flowers bisexual, actinomorphic; sepals 5, often connate at base, valvate, often with a caliculus; petals 5, 

 contorted, usually connate with the stamens at base; stamens numerous, rarely 5, the filaments adnate into a tube, the anthers 

 1-locular; ovary superior, 2- to many-locular; styles and stigmas as many as the carpels; ovules 1 to many in each locule; fruit a 



capsule or composed of separate carpels, very rarely fleshy; seeds witli scanty endosperm. About 80 genera, with about 



1,500 species, widely distributed in tropical and temperate regions. 



lA. Fruit a capsule; flowers large; ovules 3 to many in each locule 1. Hibiscus 



IB. Fruit of few to many separate carpels; flowers usually small. 



2A. Bracteoles adnate to the calyx; carpels 5; style-branches 10; ovules solitary in each locule 2. Vrena 



23. Bracteoles absent or distant from the calyx; carpels 5 to many, as many as the style-branches. 



3A. Ovules and seeds solitary in each locule 3. Sida 



3B. Ovules and seeds few in each locule 4. Abiitilon 



1. fflBISCUS L. FuYo ZoKU 



Herbs, shrubs, or small trees; leaves deciduous or evergreen, alternate, palmately nerved and lobed; flowers usually axillary, sol- 

 itary, large; calyx campanulate, 5-lobed or -parted, usually caliculate at base; petals 5; staminal tube 5-toothed at apex, the anthers 

 numerous; ovary 5-locular, with 3 to many ovules in each locule; style 5-lobed, the stigma capitate; capsules loculicidally de- 

 hiscent, 5-lobed. About 200 species, chiefly in the Tropics. 



lA. Flowers yellowish; woody plants; stipules large, narrowly ovate or oblong, obtuse; leaves undivided, densely pubescent beneath; 

 bracteoles forming a partially connate cup-shaped caliculus. 

 2A. Leaves 3.5-6 cm. long and as wide, depressed-serrulate, rounded to slighdy cordate at base; stipules about 1 cm. long. 



1. H. hamabo 

 2B. Leaves 8-15 cm. long and as wide, obsoletely undulate-dentate or subentire, deeply cordate at base; stipules 1.5-3 cm. long. 



2. H. tiliaceiis 

 IB. Flowers reddish, yellowish or white; herbs or woody plants; stipules linear, acuminate; leaves lobed; bracteoles nearly free, not connate. 



3A. Herbs with nearly 3-partcd and pinnately incised leaves; flowers pale yellow; calyx membranous, thinly pubescent with simple long 

 hairs on nerves i. H. triontim 



3B. Woody plants with 3- to 5-lobcd leaves; flowers reddish or white; calyx herbaceous, densely stellate-pubescent with indistinct nerves. 



4A. Leaves ovate, 3-lobed, subcuncate, sometimes obtuse at base 4. H. syriactis 



4B. Leaves cordate-orbicular, angular, cordate at base 5. H. mtitabilis 



1. Hibiscus hamabo Sieb. & Zucc. H. tiliaceus var. stipules about 1 cm. long, narrowly ovate-triangular, decidu- 



haniabo (Sieb. & Zucc.) Maxim. Hamabo. Bushy shrub ous; flowers solitary, axillary, pedicellate, about 5 cm. across, 



1-2 m. high, with yellowish gray stellate pubescence on branch- pale yellow with a dark red center, the pedicel about 1 cm. 



lets, undersides of leaves, outer side of stipules, bracteoles, and long; bracteoles connate to middle, about one-half as long as 



calyx; leaves deciduous, rather thick, depressed-orbicular to the calyx, the free portion lanceolate; calyx-lobes deltoid-ovate, 



-obovate, or obsoletely 4-angled, i-6 cm. long, 3-7 cm. wide, acute; petals 4-5 cm. long, obovate, rounded. July-Aug. 



abrupdy acute, rounded to subcordate at base, obtusely serru- Near seashores; Honshu (Sagami Prov. and westw.), Shikoku, 



late, 5- or sometimes 7-nerved from the base, thinly stellate- Kyushu. Ryukyus and Korea (Quclpaert Isl.). 



puberulent on upper side, die petioles 8-20 mm. long, the 



