Inventory study of Impatiens has been done in Sumatra. Twenty five species of Impatiens were colleted from several research sites. Based on the morphological flower and their color, 9 species among them, such as I. tujuhensis Utami & T. Shimizu, I. elephanticeps Grey-Wilson, I. sorikensis N. Utami, I. pilosivitata Grey-Wilson, I. steenisii Grey-Wilson, I. sidikalangensis Grey-Wilson, I. pseudoperezii Grey-Wilson, I. rubriflora Grey-Wilson, and I. batanggadisensis N. Utami have potential as ornamental plants. I. tujuhensis Utami et T. Shimizu is closely related to I. elephanticeps Grey-Wilson. The two taxa are characterized by lower sepal like an elephant's trunk, but I. tujuhensis differs from I. elephanticeps in having leaf lamina pubescent above with crenulated margins, petioles with several stipulated glands, the smaller tepals densely pubescent outside, but with lateral united petals which are bent backward along the midrib, the upper portions of the lateral united petals with a brown-purple patch and the dorsal petal with dense brown-purple reticulation inside. I. sorikensis N. Utami finds its closest ally in I. pilosivitata Grey-Wilson. They differ in a number of important aspects: the shape of the lateral petals, the color of the flowers, and the shape of the leaves. I. steenisii Grey-Wilson has a broader navicular lower sepal with a short incurved spur; flowers when viewed from the front have a curious bilateral asymmetry caused by a twist in the lateral united petals. I. sidikalangensis Grey-Wilson is characterized by rather flat or shallowly cupped, white or pale pink flowers, the dorsal petal and the base of the two lateral petals stained with reddish or lilac-purple. I. pseudoperezii Grey-Wilson has large pink or purple, with long curved spurs. I. rubriflora Grey-Wilson is the only species with red flowers, with its stout inflorescence and narrow bucciniform lower sepal. I. batanggadisensis N. Utami is characterized by yellow flowers with red markings on the bases of the two lateral petals, emarginated lower petals, and glabrous leaves.

SUMMARYSeed coat morphology was observed through SEM for 65 species and 10 sections of Impatiens. Several types of seed coat are recognized in this study. On the basis of comparison with other characters such as chromosome numbers, floral characters and seedling morphology, systematic problems concerning Impatiens are briefly discussed.

Ganyong merupakan tanaman yang sederhana dan potensial sebagai sumber karbohidrat, sehingga sangat layak untuk dikembangkan. Kandungan kabohidratganyong dibandingkan kandungankabohidrat lebih tinggi dari umbi kentang. Ganyong memiliki variasi morfologi yang luas dalam bentuk tanaman tinggi, warna daun, panjangdan lebar, warna dan bentuk ubi variasi kandungan kimia dalam umbi ganyong, sehingga diperlukan seleksi berdasarkan fenotipe untuk memperoleh varian dari ganyong dengan produktivitas tinggi. Ganyong adalah tanaman yang biasanya tumbuh pada daerahnaungan seperti di bawah pohon namun di sisi lain kemampuan pertumbuhannya belum diteliti . Penelitian respons pertumbuhan ganyong 4 varian dalam kondisi iklimmikro yang berbeda telah dilakukan di Laboratorium Macropropagation, Botani Divisi, CSC. Penelitian dilakukan dalam Rancangan Acak Kelompok Faktorial yang terdiri dari3 faktor di mana faktor 1 adalah shading intensitas: 0% (tanpa naungan), 50% dan intensitas varian ganyong 70%), faktor 2 adalah ganyong varian (merah, pink, hijaudan putih) sedangkan faktor ke-3 adalah waktu panen (9 dan 11 bulan).Hasil penelitian menunjukkan bahwa setiap faktor yang merupakan bayangan intensitas, varian danwaktu panen berpengaruh nyata terhadap pertumbuhan dan produksi ganyong. Intensitas naungan terbaik adalah 50% yang secara signifikan berbeda dari 0% dan 70% intensitas naungan dalam hal jumlah tunas, berat segar dan berat kering daun dan berat batang, panjang umbi, bobot segar dan kering umbi. Putih varian dari ganyong prodused terpanjang ukuran umbi, bobot segar tertinggi daun dan batang, highst berat segar dan kering umbi dibandingkan dengan varian lain, bahkan dengan 11 bulan waktu panen mengakibatkan umbi tertinggi, berat kering tertinggi umbi, dibandingkan dengan 9 mounths panen. Kombinasi terbaik dari pengobatan adalah putih ganyong varian, 50% perlakuan yang diberikan adalah pada varian ganyong putih dengan intensitas.naungan 50% dan waktu perlu 9 bulan mengakibatkan produksi siknifikan seperti diameter umbi terbesar (4,8 cm), berat segar dan kering umbi highst dari 8454 g dan 1134 g / tanaman masing-masing. Kandungan kimia umbi dipengaruhi oleh varian dari ganyong dan waktu panen. Kandungan karbohidrat paling tinggi ditemukan pada9 waktu panen mounth, sedangkan kandungan serat, lemak dan protein paling tinggi ditemukan pada waktu panen 11 bulan.

Lauraceae are relatively well-known embryologically and embryological data are available for 23 of about 50 genera. In this paper we present the embryology of Eusideroxylon , an unstudied and key genus within Cryptocaryeae, which are positioned basally in the evolution of Lauraceae, and discuss the evolution of embryological characters in the family. Based on comparisons of over 50 characters, it was found that Eusideroxylon is consistent with Aspidostemon , the core Cryptocaryeae ( Beilschmiedia , Cryptocarya , Endiandra and Potameia ), Caryodaphnopsis and Cassytha in having a glandular anther tapetum. The core Cryptocaryeae further agrees with both Caryodaphnopsis and Cassytha in having an embryo sac protruding from the nucellus. In light of the phylogenetic trees available, both the glandular tapetum and the embryo sac protruding from the nucellus have evolved as homoplasies in Lauraceae, once each in a clade of Cryptocaryeae, and the Caryodaphnopsis and Cassytha clade, respectively. Such character-state distributions suggest that it is better to place both Caryodapnopsis and Cassytha in the same clade as the core Cryptocaryeae. Embryologically, Eusideroxylon appears to have an intermediate state between Hypodaphnis , a genus positioned basal-most in the family, and the core Cryptocaryeae. Supplementary data on the anther and seed of Hypodaphnis are also provided.

No abstract